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Modifying the equipment without Monoprice's authorization may result in the equipment 
no longer complying with FCC requirements for Class B digital devices. In that event, your 
right to use the equipment may be limited by FCC regulations, and you may be required to 
correct any interference to radio or television communications at your own expense. 
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 
communications. 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. 

 

Radio Notice for FCC 

Caution 
This FCC Part 15 radio device operates on a non-interference basis with other devices 
operating at this frequency. Any changes or modification to said product not expressly 
approved by Monoprice, including the use of non-approved antennas, could void the user's 
authority to operate this device.  
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.

 

 

Summary of Contents for 43251

Page 1: ...Bluetooth Headphones with Active Noise Cancelling P N 43251 User s Manual ...

Page 2: ...s which could cause hearing damage Reduce the volume to minimum before wearing these headphones then increase the volume to a comfortable listening level Do not expose this device to excessively high temperatures Do not place it in on or near a heat source such as a fireplace stove radiator etc Do not leave it in direct sunlight This device contains a Lithium ion battery Dispose of this device onl...

Page 3: ...tomer Service representative through the Live Chat link on our website www monoprice com or via email at support monoprice com Check the website for support times and links PACKAGE CONTENTS Please take an inventory of the package contents to ensure you have all the items listed below If anything is missing or damaged please contact Monoprice Customer Service for a replacement 1x Bluetooth Headphon...

Page 4: ...4 PRODUCT OVERVIEW 1 Multifunction Button MFB 2 Volume 3 Volume 4 Bluetooth LED Indicator 5 Micro USB Charging Port 6 Microphone 7 Power Switch 8 ANC LED Indicator 9 3 5mm Audio Jack 10 ANC Switch ...

Page 5: ...er off With power on slide the switch to the OFF position The voice prompt will say Power Off MFB Play pause Momentarily press to pause or resume audio playback Redial last phone call Double press to redial the last phone number called Voice dialing Press and hold for 1 second to enable voice dialing Answer a call When an incoming phone call is received momentarily press to answer the call Hang up...

Page 6: ...udio connection slide the switch to the ON position to turn Active Noise Cancelling on ANC off With the headphones powered off in Bluetooth mode or using a 3 5mm audio connection slide the switch to the OFF position to turn Active Noise Cancelling off LED INDICATIONS Status LED Indication Power on Bluetooth LED Indicator flashes blue twice Power off Bluetooth LED Indicator flashes red twice Blueto...

Page 7: ...battery fresh and capable of holding a full charge 1 With the headphones powered on slide the Power Switch to the OFF position 2 Plug one end of the included Micro USB Charging Cable into the Micro USB Charging Port on the headphones then plug the other end into a USB power source such as a wall charger power bank computer etc available separately The Bluetooth LED Indicator illuminates solid red ...

Page 8: ...ring record 2 Ensure that your mobile device is within 3 feet of the headphones Open the Bluetooth settings on your device and scan for nearby Bluetooth connections 3 Locate and select the MP43251 entry If prompted for a passcode enter 0000 four zeros Once connected the Bluetooth LED Indicator will flash blue once every 10 seconds 4 If your mobile device supports the AVRCP Bluetooth profile you ca...

Page 9: ...ime If you want to stream from the second device you must stop playback on the first device Note that the selected audio codec is determined by the codecs supported on the two devices The priority order is aptX Low Latency aptX AAC and SBC If the two devices do not support the same codecs the SBC codec will be selected WIRED CONNECTION If your audio device does not have Bluetooth or if you prefer ...

Page 10: ... to provide free live online technical support to assist you with any questions you may have about installation setup troubleshooting or product recommendations If you ever need assistance with your new product please come online to talk to one of our friendly and knowledgeable Tech Support Associates Technical support is available through the online chat button on our website www monoprice com or...

Page 11: ...ours Standby Time About 400 hours Playback Talk Time About 20 hours 50 volume ANC OFF BT ON About 10 hours 50 volume ANC ON BT ON About 14 hours 50 volume ANC ON BT OFF Dimensions 8 3 x 6 1 x 3 3 210 x 155 x 83 mm Weight 9 5 oz 269 g REGULATORY COMPLIANCE Notice for FCC This device complies with Part 15 of the FCC rules Operation is subject to the following two conditions 1 this device may not cau...

Page 12: ...quipment 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 ...

Page 13: ...is device complies with IC RSS 210 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 Monoprice and all Monoprice logos are trademarks of Monoprice Inc The Bluetooth word mark and logos are registered trademarks of Bluetooth SIG Inc Qu...

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