SME I13 TWS Bluetooth Headset with Mic Bluetooth  (White, True Wireless)

1. Driver: 15mm 2. Impedance: 32 OHM 3. Bluetooth version: Bluetooth v5.0+EDR, Jerry 5.0 solution 4. Bluetooth use frequency band: 2.4GHz 5. Power level: CLASS II 6. Output power: 30mW 7. Bluetooth distance: 15~20 meters barrier-free 8. Frequency response: 20-20000Hz 9. Working voltage range: 3.0V-4.2V 10. Microphone sensitivity: -42dB 11. With A2DP / AVRCP high quality stereo audio transmission and remote control protocol 12. Powerful noise cancellation circuit (active noise reduction) 14. Charging time is about 1 hour (power indicator charging: red light is on, full charge: red light is off (blue light is on). 15. Product size: 53 × 44 × 21mm 16. The net weight of the product is about 32g 17. Play time is about 120-150 minutes 18. Standby time is about 48 hours 19. Battery capacity 35MAH (charging compartment 350MAH) 20. Charging power supply: DC5V power supply [Lighting interface] (computer USB port, mobile phone charger, car charger)