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

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