Long Endurance Small Ears Wireless TWS Bluetooth Headset

Type: true wireless headphones Monomer: 10mm moving coil Frequency response: 20Hz~20kHz Bluetooth version: 5.0+EDR Bluetooth support protocol: AAC, SBC, A2DP, AVRCP, HSP, HFP, SPP, HID Transmission frequency: 2.4GHz~2.48GHz Maximum effective transmission distance: 10m (straight line without barrier) Battery capacity and charging cycle: 3.7V 55mAh, 300 times or more 80% Working time: 4~5 hours of continuous play Standby time: 100 hours Microphone: Yes Charging terminal: USB Type-C Carrying box battery capacity: 450mAh Carrying the box to charge the headset: 4~6 times Carrying box battery standby time: 60 days