Awei T78 TWS Bluetooth Earbuds V5.3 Wireless Headphones with Mic Hifi HD Sound

Awei T78 TWS Bluetooth Earbuds V5.3 Wireless Headphones with Mic Hifi HD Sound Bluetooth scheme: JL, V5.4 Supported protocols: HFP, A2DP, HID, AVRCP, AVCTP, AVDTP Battery capacity of earbuds: 30mAh*2 (No protection board but protection IC) battery: 200mAh (protection board) Charging voltage: DCSV Charging time: 1h Play time: 5h Talk time: 4h Standby time: 300h Best call distance <1m Maximum transmission distance: J0m Voice prompt: support Impedance: 3zn Sensitivity: J J2 3dB Frequency response range: 2.402GHz to 2.480GHz Horn: pt 3mm Multi-point connection: unsupported User manual: Chinese and English Charging port: Type-C Accessories: USB charging cable, user manual