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A3.2. The volume may have been adjusted to the minimum. Please adjust the sound 
wheel to reach desired volume. 

Q4. Why is the sound quality very poor in the Bluetooth mode? 

A4.1: The Bluetooth connection may not be in its optimal condition. Please make 
sure that the headphones are close enough to your device, and there is no obstacle 
between them. 

 

Product Specifications: 

1.

 

Bluetooth version: 4.1 

2.

 

Bluetooth chipset: CSR8670 with aptX Low Latency 

3.

 

Noise cancellation rate: approximately 90% 

4.

 

Bluetooth profiles: HFP, HSP, A2DP, AVRCP, AAC, aptX, aptX Low Latency  

5.

 

Speakers: 40mm neodymium 

6.

 

Audio impedance: 32Ohm 

7.

 

Charging time: about 3 hours 

8.

 

Charging: Micro USB 

9.

 

Bluetooth operating range: ≥10 m 

10.

 

Connection: 3.5mm jack 

11.

 

Battery time (Bluetooth only): 15 hours 

Battery time (Noise cancelling only): 25 hours 

Battery time (Blu noise cancelling): 9 hours 

12.

 

Battery type: Li-Polymer 

 

Package content 

1.

 

Headphone  

2.

 

Micro USB charging cable 

3.

 

3.5mm audio cable 

4.

 

Detachable microphone  

5.

 

1/4’’ stereo-plug adapter 

Summary of Contents for BNC90

Page 1: ...d using the product In particular attention shall be given to the following information 1 It needs to be stored or used in the ambient temperature 2 It shall not be placed in water or wet locations 3...

Page 2: ...2 seconds to seamlessly switch the conversation between the headphone and the mobile phone 3 When an incoming call from the third party occurs during the call tap the MFB button to hang up the curren...

Page 3: ...the same time If was previously paired to a Smartphone it is possible to be paired with a 2nd Smartphone restart switch off and switch on to enter pairing mode repeat the above pairing procedure to p...

Page 4: ...ry headphone is still expected to be in use the indicator of the secondary headphone will return to standby mode and flash green 1 once every second You will have to manually pair the headphone with a...

Page 5: ...light up in green Note After you turn ON the power you might hear a slight hissing noise This is a normal function and will cease after a few seconds When the batteries are running low the Noise Canc...

Page 6: ...Q2 Why can t I connect the headphone to my Bluetooth device A2 1 The Bluetooth function on your device may have been turned off Please turn on the Bluetooth function on your device and allow it to sea...

Page 7: ...ooth chipset CSR8670 with aptX Low Latency 3 Noise cancellation rate approximately 90 4 Bluetooth profiles HFP HSP A2DP AVRCP AAC aptX aptX Low Latency 5 Speakers 40mm neodymium 6 Audio impedance 32Oh...

Page 8: ...ill 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 en...

Page 9: ...1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation...

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