Colorful LED lights: seven-color transform cool breathing light, which will help you be more charming.
Headphones have a variety of options for listening. With a built-in TF card slot, you can use the
TF / Micro SD card with the loaded MP3 music and listen to the song directly on the headset.
Designed with Bluetooth 5.0 CSR chipset for lower power consumption and higher compatibility.
Compatible with all phones, tablets, laptops, any Bluetooth-enabled device or device with a 3.5mm audio jack.
Built-in microphone: Supports hands-free calling and voice report caller ID.
With the latest enhancements, your voice sounds clearer in a noisy environment.
40mm diaphragm speaker driver, deep sound quality stereo, enjoy wireless high quality music.
Soft leather ear pads and a retractable headband reduce the burden on your ears. Do not feel uncomfortable when wearing for a long time.
Ergonomic design that simulates soft earmuffs based on human skin texture to ensure lasting comfort.

Model: B39 with Bluetooth adaptor and Bag
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: 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,red black,white,black.blue

1 x Bluetooth headset.
1 x Bluetooth adaptor for TV
1 x Headphone bag
1 x charging cable.
2 x 3.5mm audio cable.
2 x Chinese and English user manual.