Description

1. HiFi Powerful Bass Stereo Sound Effect: 40mm diaphragm speaker drivers, deep bass stereo sound, enjoy the wireless high quality music.

2. Comfortable Over-Ear Fit: Soft protein leather earpad and retractable headband lifts the burdens for your ear. No discomfort after long-time wearing.

3. Comfortable and Foldable: Technical ergonomics design with soft earmuffs simulated to human skin texture, ensure long lasting comfort

4. Wireless and Lightweight: Ear Pad headphones for enjoying extended listening of TV and audio—without disturbing others

5. Built in Microphone: supports hands-free call and voice reporting incoming call number. With the latest enhanced technology makes you voice sound clearer in noisy environments

6. Bluetooth 5.0 Adopt: The Bluetooth 5.0 CSR Chipset, lower power consumption, superior compatibility. Compatible for all the mobile Phone, Tablet PC, Notebook, any devices with bluetooth function Or has A 3.5mm Audio Jack

Multi-Functions: headsets have several options for listening enjoyment. Built in TF card slot and you can use a TF/Micro SD card with loaded MP3 music and listen to the songs directly on your headsets. 

8. Colorful LED Light: Seven-color transform cool breathing light, shine everywhere, anytime.

Specification
Name: B39.
Uses: wireless headphones, voice headsets.
Bluetooth version: V5.0.
Bluetooth mode support: A2DP 1.2, AVRCP 1.0, HSP, HSF 1.5.
Frequency: 2.402-2.480GHZ, 2.4G ISM band.
RF performance: receiver sensitivity: -84dBm; transmit power up to 4dBm.
Frequency response: 20 Hz-20 KHz.
Signal to noise ratio (SNR): 70Db.
Total harmonic distortion rate (THD) 0.1%.
Power indicator: Red and blue indicators flash alternately.
Headphone charging: rechargeable 400MAH lithium battery.
Charging port: 5-pin USB charging interface.
Normal charging time: 2.5 hours.
Talk time: up to 10 hours.
Standby time: up to 20 days.
Working temperature: -20 ° C -55 ° C.
Other features: support status indicator, charging indicator display.
Color: black red

Note:
There might be a bit color distortions due to different computer resolutions.
Please allow 1-3mm error due to manual measurement, make sure you do not mind before you bid.

Package included:
1x Bluetooth headset.
1x charging cable.
1x Chinese and English user manual.