Features:

1. This B3505 wireless Stereo headphone with remarkable sound, it is a good choice for listening music, watching movie, chatting online, etc. 

2. Supplied with a 3.5mm cable that you can use to connect the headphone to wireless devices.

3. Powered by the lithium battery (can be charged via USB). 

4. Good quality and fashionable appearance; adjustable length hinges and very comfortable to wear. 

Specifications:

1. Version:V4.1

2. Operation distance: 33feet

3. Speaker diameter: 50mm  Microphone unit: 4 * 1.5mm

4. Impedance: 32ohm

5. S.P.L: 106dB S.P.L. at 1KHz

6. Frequency response: 20HZ-20,000HZ

7. Battery: Built-in rechargeable 3.7V/250mAh lithium-ion battery

8. Charging time: Approx. 3 hours

9. Working time: Approx. 8 hours

10. Standby time: 180 hours

11. Plug type: 3.5mm stereo

12. Audio cable length: Approx. 120cm / 3.94ft

13. Headphone size: Approx. 19 * 7.5 * 19.5cm / 7.5 * 3.0 * 7.7in

14. Headphone weight: 218g / 7.7oz

Package content:

1 * Bluetooth Gaming Headset with retail box

1 * USB charging cable

1 * Audio cable

1 * User manual

Warranty:

1. One year guarantee from JinCun Technology

2. Your Satisfaction is our Highest Goal. Please feel free to contact us with any questions