TOTU BE-1-TWS Bluetooth 5.3 Wireless Bluetooth Earphone(Black)

1. Material: PC+ABS+Silicone2. Bluetooth chip and version: JL V5.33. Standby time: about 90 days4. Working time: about 5 hours5. Battery capacity: 180mAh for charging compartment / 30mAh for one ear x 26. Frequency response: 20Hz-20KHz7. Supported protocols: HSP/HFP/A2DP/AVRCP8. Transparent space capsule design, mini and compact, transparent beauty9. Using Bluetooth 5.3, faster transmission, lower power, stable anti-interference, no sound delay