i7s TWS 5.0 Wireless Bluetooth Earphone Stereo Earbud Headset With Charging Box For All Bluetooth tablet Smart phone earphone

I7tws wireless Bluetooth headset, new upgrade. The latest Bluetooth version 5.0. Support for binaural calls. Limited time special offer! Only one day! Dear, buyer. When purchasing the i7s tws Bluetooth headset, please read this note: Due to long-term transportation, the i7s tws Electricity will be depleted. When you receive the package, you cannot use the headset. It may be that it is out of power. The first thing to do is to charge the headset box. Very important. Thank you!   Specification: 1. Driver: 15mm 2. Impedance: 32 OHM 3. Bluetooth version: Bluetooth 5.0 + EDR ( Support for binaural calls) 4. Bluetooth use band: 2.4GHz 5. Power level: CLASS II 6. Output power: 30mW 7. Bluetooth distance: 10 meter barrier 8. Frequency response: 20-20000Hz 9. Operating voltage range: 3.0V-4.2V 10. Mic sensitivity: -42dB 11. With A2DP / AVRCP high quality stereo audio transmission and remote control protocol 12. Powerful noise de-noising circuit (active noise reduction) 13. switch between Chi