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RZE-BT900E

Wireless Earphone

Operation Manual

Thank you for purchasing this product.
To use this product safely, read and understand this operation manual thoroughly before using 
it. After reading this manual, keep it in a safe place so that it can be used when necessary.

5021000

Safety precautions

The information you need to prevent danger to the user and other people as well as property 

damage is described below. “Description of signs” shows different categories of the degree 

of danger or damage that may occur due to wrong handling. “Description of symbols” shows 

the meaning of the symbols.

Important notes

• This book is only a guide for user's operation, not a criterion for configuration.

• Only use attachments/accessories specified by the manufacturer.

The lightning flash is intended to alert the user to the presence of 

dangerous voltage within the product's enclosure, and touching the 

internal components may result in a risk of electric shock to persons.

The exclamatory mark is intended to alert the user to the presence of 

important operating instructions.

To reduce the risk of electric shock or fire, do not open the cover. Refer 

servicing to qualified service personnel.

Description of signs

Indicates that there is a risk of death or serious injury.
Indicates that there is a risk of minor injury or property damage.

Description of symbols

Indicates “Prohibition” or “You must 

not do” with pictures and text.

Indicates “Mandatory Action” or “Do as 

indicated” with pictures and text.

 

„

What to do in the case of an abnormality

• Stop using the device immediately in case of an abnormality or failure.

• Remove the USB cable immediately when water or any foreign object enters the 

interior of the device. It may cause a fire or electric shock. Remove the USB cable 

immediately, and contact your dealer for a repair.

 

„

Usage

Do not use this product while driving for traffic safety.

• Do not use the product while riding a bicycle or driving a car or motorbike.

Surrounding sounds may not be heard clearly, which may cause a traffic accident.

• Besides during driving, do not use the product in places where when surrounding 

sounds cannot be heard may cause danger, such as railroad crossings, station

platforms, roadways, or construction sites.

Do not disassemble, repair, or modify the product.

• Doing so may cause a fault. Contact your dealer for a repair.

Do not leave in places within the reach of small children.

• Small children might swallow ear pieces by mistake and cause injury.

Do not expose the product to a strong shock such as dropping or stepping on the 

product.

• Doing so may cause a fault.

Do not raise the volume too high.

• Listening at ear-splitting volume for a long time may affect your hearing.

When using the product while walking, turn down the volume until surrounding 

sounds can be heard clearly.

• Otherwise, it may cause a traffic accident.

Notes on usage

 

„

About handling

• If you feel unwell while using the product, stop using it immediately.
• Do not place the product either in wet, humid, dusty smoky, steamy places, near a heater, 

or in direct sunlight.

• Do not leave the product where it gets extremely hot such as in a car.
• Do not spray insecticide or any volatile material. Also do not keep the product touched with 

rubber or plastics for a long time. The product may become discolored or its painting may 

come off.

 

„

About static electricity precautions

When wearing the earphone, you may feel the sound and stimulus caused by static electricity. 

In dry-weather seasons or places where static electricity likely occurs, you can reduce it by 

avoiding wearing clothes of chemical fiber, or using an antistatic ring.

 

„

About maintenance

• Wipe with a dry, soft cloth.
• If the ear piece gets dirty, take it off from the earphone and wash it with diluted neutral

detergent by hand.

• Never use alcohol, paint thinner or benzine to clean this product. Doing so may cause the 

product's surface deteriorate.

 

„

Rechargeable battery (Lithium polymer ion)

To reduce the risk of fire, electric shock or product damage,

• Do not attempt to replace the battery by yourself, it is built-in and is not

changeable.

• Do not heat, disassemble, or short-circuit the battery. Doing so may cause the

battery and power supply to generate heat, rupture, or ignite. 

•  Charge the battery only in an ambient temperature between 5 and 35 degrees

Celsius. Otherwise, the electrolyte solution might leak, battery performance

might deteriorate and the battery life might be shortened.

•  Do not continue charging the battery if it does not reach full charge within the

specified charging time. Overcharging may cause the battery to become hot,

rupture, or ignite.

•  Do not expose the battery to excessive heat such as under the sun or near the fire 

or the like.

Overheat, leakage, or rupture may occur, resulting in burns or injury.

If you touch the battery fluid, rinse it off with water and consult with the doctor. If the 

battery fluid spills over the device, wipe it off without touching the fluid.

If you leave the unit unused for a long period of time, the built-in rechargeable battery 

will be in an over discharge state due to self discharge, and the charging capacity may 

deteriorate or the battery may be no longer rechargeable. Even if you are not using the 

unit, charge the battery once or twice a year for 1.5 hours each time.

Important Safety Instructions

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4.  Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with dry cloth.

7. Do not block any ventilation openings. Install in accordance with the manufacturer's

instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other

apparatus (including amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized

plug has two blades with one wider than the other. A grounding type plug has two

blades and a third grounding prong. The wide blade or the third prong are provided for

your safety. If the provided plug does not fit into your outlet, consult an electrician for

replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched particularly at plugs,

convenience receptacles, and the point where they exit from the apparatus.

11. Only use attachments/accessories specified by the manufacturer.

12. Use only with the cart, stand, tripod, bracket, or table specified by the

manufacturer, or sold with the apparatus. When a cart is used, use caution 

when moving the cart/apparatus combination to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or when unused for long

periods of time.

14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus 

has been damaged in any way, such as power-supply cord or plug is damaged, liquid has 

been spilled or objects have fallen into the apparatus, the apparatus has been exposed to 

rain or moisture, does not operate normally, or has been dropped.

FCC Statement :

This device complies with Part 15 of the FCC Rules. Operation is subject to the following 

two conditions:

1) This device may not cause harmful interference, and 2) This device must accept any

interference received, including interference that may cause undesired operation.

Note: This equipment has been tested and found to comply with the limits for a Class B 

digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide 

reasonable protection against harmful interference in a residential installation. This 

equipment generates, uses, and can radiate radio frequency energy and, if not installed 

and used in accordance with the instructions, may cause harmful interference to radio 

communication. However, there is no guarantee that interference will not occur in a 

particular installation. If this equipment does cause harmful interference to radio or 

television reception, which can be determined by turning the equipment off and on, 

the user is encouraged to try to correct the interference by one or more of the following 

measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

Caution: Changes or modifications not expressly approved by the party responsible for 

compliance could void the user's authority to operate the equipment.

IC-CANADA :

This device complies with Industry Canada license-exempt RSSs. Operation is subject to 

the following two conditions: (1) this device may not cause interference, and (2) this device 

must accept any interference, including interference that may cause undesired operation 

of the device.

This Class [B] digital apparatus complies with Canadian ICES-003.

Cet appareil s'accorde avec Industrie Canada licence-exempte RSS

s

Son 

fonctionnement  est  soumis  aux  deux  conditions  suivantes: 

(1) cet appareil ne peut pas 

causer l'intervention, et (2) cet appareil doit accepter de l'intervention, y compris 

l'intervention qui peut causer l'operation non desiree de.

Cet appareil numerique de la classe B est conforme a la norme NMB-003 du Canada.

California Prop 65 Warning :

This product contains chemicals, including lead, known to the 

State of California to cause cancer and birth defects or other 

reproductive harm. 

Wash hands after handling.

 

„

Disclaimer

• Toshiba shall not be responsible for any damage caused by an earthquake,

thunderstorm, flood damage, fire for which Toshiba is not responsible, acts of a third 

party, other accidents, or damages caused by the user's willful acts or negligence,

misuse, or use in abnormal conditions.

• Toshiba shall not be responsible for any damage caused by failure to observe the

information described in the operation manual.

 

„

Disposal

• When disposing of this device, observe the laws, or ordinances and rules of the local

government.

• When disposing of the battery, make a request to a recycle agency for disposal.

• This product contains a built-in lithium ion rechargeable battery. There is a risk of

injury due to fire, explosion or leakage if the battery is not used, handled, replaced 

or disposed of properly. Dispose of the battery as required by local ordinances

or regulations. Do not disassemble, crush or expose the battery to fire or high

temperatures.

About Using Bluetooth®

This unit is designed for use with Bluetooth® wireless devices compatible with the HFP, HSP, 

SPP, A2DP and AVRCP streaming audio profiles. Refer to your Bluetooth® device's user manual 

or technical support to determine if your Bluetooth® device supports these profiles.

 

„

Frequency band used

This unit uses the 2.4 GHz frequency band. However other wireless devices may use 2.4 GHz 

frequency band as well and may cause interference with each other. To avoid interference, 

please refrain from the use of the unit at the same time with other wireless devices.

 

„

Certification of this device

This unit conforms to frequency restrictions and has received certification based on 

frequency laws, so a wireless permit is not necessary.

However, the following action is punishable by law in some countries:
• Taking apart/modifying the unit.

 

„

Usage restrictions

• Wireless transmission and/or use with all Bluetooth® equipped devices is not guaranteed.
• A device featuring the Bluetooth® function is required to conform to the Bluetooth® standard 

specified by Bluetooth SIG, and be authenticated. Even if the connected device conforms 

to the above mentioned Bluetooth® standard, some devices may not be connected or work 

correctly, depending on the features or specifications of the device.

 

„

Range of use

Use this device within an unobstructed 10 m range. The range of use or perimeter may be 

shortened depending on any obstructions, devices causing interference, other people in the 

room, or the construction of the building. Please note that the range mentioned above is 

not guaranteed.

The Bluetooth® word mark and logos are owned by the Bluetooth SIG, Inc. and are used 

under license.

Note

• This unit may receive radio interference caused by mobile telephones during use. If

such interference occurs, please increase separation between this unit and the mobile

telephone.

Parts Names

1

9 Left 9 Right

2

4

3

5

7

6

5

8 Left

8 Right

1

Charging case opening button

2

Charging status indicator (4 LED)

3

USB Charge output socket

4

Micro USB Charging socket

5

Charging status indicator for Earphone (Red)

6

Earphone status indicator (Blue)

7

Multi-function button (Power on / Power off

/ Play / Pause / Answer a call / Reject a call / 

Redial / Pairing / Voice Control )

8

Charging port

9

Charging pins

Getting Started

The earphones and the charging case have built-in lithium-ion polymer batteries. Charge 

them fully beforehand.

 

„

Charging the Earphones

1

Place each earphone in the charging case in the right position and

close the case.

The charging status indicator for the earphone is turned ON.

Note

• When charging the earphones using the charging case, the charging status indicator for

the earphones and charging case  are turned ON and OFF when fully charged.

• The charging status indicator for the case (4 LEDs) shows the current battery capacity level 

(such as 25, 50, 75 or 100 %).

 

„

Charging the Charging Case

1

Insert the supplied USB cable into the Micro USB charging socket on

the charging case.

2

Connect the USB cable to a USB port of your computer or a mobile

USB charger.

The charging status indicator for the case is turned ON during the charging.

Note

• The charging status indicator for the case (4 LEDs) shows the current battery capacity level 

(such as 25, 50, 75 or 100 %).

• The charging status indicator for the case (4 LEDs) is turned off when fully charged.

Wearing the Earphone

Check the left and right, wear the ear piece in your ears.
•  The one marked with “R” is for the right ear, and the one 

marked with “L” is for the left ear.

• After use, take them off from your ears slowly. 

Caution

• Pressing the earphones strongly or taking them off from your ears roughly may hurt your 

eardrum. Put on or take off the earphones slowly.

L

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Summary of Contents for RZE-BT900E

Page 1: ...rate normally or has been dropped FCC Statement This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 This device must accept any interference received including interference that may cause undesired operation Note This equipment has been tested and found to comply with the limits for a Class B...

Page 2: ...device Note Use your device to adjust the volume level To pause press the multi function button once To play again press the button once again Pairing for the second time or later The earphones are turned on automatically when you take them out from the charging case The earphones start pairing automatically with the last paired device Disconnecting the Bluetooth device currently connected and con...

Page 3: ...d in design or construction In order to enforce the rights under this limited warranty the purchaser should follow the steps set forth below and provide proof of purchase to the servicer The limited warranty described herein is in addition to whatever implied warranties may be granted to purchasers by law ALL IMPLIED WARRANTIES INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR USE ARE LI...

Page 4: ...ve exclusion may not apply to you THIS LIMITED WARRANTY IS VALID ONLY IN THE FIFTY 50 UNITED STATES THE DISTRICT OF COLUMBIA AND PUERTO RICO Your Product Model Number Description RZE BT900E True Wireless Earbuds with Power Bank Warranty Period for this Product One 1 year parts and labor from the date of purchase Additional Item s Excluded from Warranty Coverage if any Non functional accessories Wh...

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