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Specifications

Base station

Dimensions (W x H x D)

88 x 119 x 100 mm

 

Weight

D 10 Phone: 352 g 
D 10 USB: 328 g

Headset

Dimensions

140 x 24 x 22 mm (W x H x D)

Weight

with ear hook: approx. 22 g
with headband: approx. 45g

Talk time

narrowband: up to 12 hours
wideband: up to 8 hours

Charging time

50%: approx. 20 min
100%: approx. 1 hour

Range
(environment dependent)

free line of sight: up to 180 m
in office buildings: up to 55 m

Speaker type

dynamic, neodymium magnet

Microphone type

Electret microphone,  
noise canceling

Base station and Headset

DECT frequency range

EU:     1880 MHz – 1900 MHz
USA:  1920 MHz – 1930 MHz

RF output power

EU: max. 250 mW (EIRP)
US: max. 100 mW (EIRP)

Operating temperature range

+5 °C to +45 °C
(+41 °F to +113 °F)

Storage temperature range

–20 °C to +70 °C 
(–4 °F to +158 °F)

Power supply unit

Nominal input voltage

100 – 240 V~

Nominal input current 

max. 0.2 A

Mains frequency 

50 – 60 Hz

Nominal output voltage

5.9 V DC

Nominal output current

850 mA

Operating temperature range

+5 °C to +45 °C 
(+41 °F to +113 °F)

Storage temperature range

–20 °C to +70 °C 
(–4 °F to +158 °F)

Relative humidity

operation: 20 to 85%
storage: 20 to 95%

Weight

approx. 75 g

EN

Important safety instructions

 

Read the instruction manual, safety guide, quick guide (as 
supplied) carefully and completely before using the product. 

 

Always include this safety guide when passing the product on 
to third parties. 

 

Do not use an obviously defective product.

 

Before putting the product into operation, please observe the 
respective country-specific regulations!

Preventing damage to health and accidents

 

Do not listen at high volume levels for long periods of time to 
prevent hearing damage.

 

Always maintain a distance of at least 3.94“ (10 cm) between 
the ear cups and the cardiac pacemaker or implanted 

 

defibrillator since the product generates permanent magnetic 
fields.

 

Keep the product, accessories and packaging parts out of reach 
of children and pets to prevent a ccidents and choking hazards.

 

Do not use the product in an environment that r equires your 
special attention (e.g. in traffic).

Preventing damage to the product and  malfunctions

 

Always keep the product dry and do not expose it to extreme 
temperatures (hairdryer, heater, e 

xtended exposure to 

 

sunlight, etc.) to avoid corrosion or deformation.

 

Use only attachments/accessories/spare parts supplied or 
recommended by Sennheiser. 

 

Only clean the product with a soft, dry cloth. 

 

Unplug the power supply unit from the wall socket to 

 

completely disconnect the product from the mains power 
supply.

 

Do not short-circuit the contacts of the product. Make sure that 
no metal objects (e.g. paper clips, hair pins, earrings) come into 
contact with the interfaces and contacts.

 

Only use the base station or the CH 10 charger for charging D 10 
series headsets.

Safety instructions for the Lithium-Polymer battery pack

WARNING

In extreme cases, abuse or misuse of Lithium-Polymer 
battery pack can lead to:
• explosion,
• fire development,
• heat generation or
• smoke or gas development.

Dispose of defective products with built-in rechargeable 
batteries at special collection points or return them to 
your specialist dealer.

Only use rechargeable batteries recommended by 
Sennheiser and the appropriate chargers.

Only charge the battery pack at ambient temperatures 
between 10°C/50°F and 40°C/104°F.

Switch battery pack-powered products off after use.

When not using the battery pack for extended periods 
of time, charge them regularly (about every 3 months).

Do not heat above 70°C/158°F, e.g. do not expose to 
sunlight or throw into a fire.

Intended use/Liability

The headset system can be used for calling and – together with a 
computer (VoIP) and/or a telephone – for audio input/output and 
is intended for professional office or call center use.
It is considered improper use when this product is used for any 
application not named in the associated product guides.
Sennheiser does not accept liability for damage arising from abuse 
or misuse of this product and its attachments/accessories. The risk 
is to be borne by the user.
Sennheiser is not liable for damages to USB devices that are not 
consistent with the USB specifications.
Sennheiser is not liable for damages resulting from the loss of  
connection due to flat or overaged rechargeable batteries or  
exceeding the DECT transmission range.

Manufacturer Declarations

Warranty

Sennheiser Communications A/S gives a warranty of 24 months on 
this product. 

Sennheiser product warranty FOR AUSTRALIA ONLY

Sennheiser’s goods come with guarantees that cannot be excluded under the 
Australian Consumer Law. You are entitled to a replacement or refund for 
a major failure and compensation for any other reasonably foreseeable loss 
or damage. You are also entitled to have the goods repaired or replaced if 
the goods fail to be of acceptable quality and the failure does not amount 
to a major failure.
This warranty is in addition to other rights or remedies under law. Nothing in 
this warranty excludes, limits or modifies any liability of Sennheiser which is 
imposed by law, or limits or modifies any remedy available to the consumer 
which is granted by law. 

In compliance with the following requirements

• WEEE Directive (2012/19/EU)

Please dispose of this product by taking it to your local 
collection point or recycling center for such equipment.

• Battery Directive (2006/66/EC & 2013/56/EU)

The product’s built-in rechargeable batteries can be 
recycled. In order to protect the environment, please 
dispose of defective products with their rechargeable 
batteries as special waste or return them to your 
specialist dealer.

EU Conformity

• RoHS Directive (2011/65/EU)
• Hereby, Sennheiser Communications A/S declares that 

the radio equipment type D 10 Series is in compliance 
with the Radio Equipment Directive (2014/53/EU).

Safety Guide

 

D 10 Phone
D 10 USB
D 10 USB ML

Sennheiser Communications A/S

 

View other office equipment & supplies made by Sennheiser on our website.

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