BH-I37 Bluetooth 5.0 Wire-controlled Bluetooth Earphone Built-in High-fidelity Microphone, Support Call, Black, Green, Red

Product specifications:
1. Bluetooth chipset: BK.
2. Bluetooth version: V5.0.
3. Frequency range: 20Hz-20KHz.
4. Battery: 145mAh rechargeable lithium battery.
5. Charging time: 2 hours.
6. Music playback time: 8 hours (Bluetooth + ANC), 12 hours (Bluetooth only).
7. Working distance: greater than or equal to 10M.

Packing list:
Bluetooth headset x 1
0.5 m USB charging cable x 1
S / M / L earmuffs x 1
Instruction manual x 1