Bluetooth Version: 5.3 Bluetooth working frequency: 2.402GHz-2483.5MHz Receive sensitivity: 2.402GHz-2483.5MHz Transmission distance: ~10M Horn power: 3mW Frequency response: 20Hz~20KHz Speaker type: 10mm@160hm Earbuds battery capacity: 35mAh Charging time: about 1 H Music playing time: about 4H Talk time: about 3.SH Charging case battery capacity: 350mAh Charging case charging time: 1H Standby time: 4 months when fully charged Support Bluetooth profile: a2dp/ avctp/avdtp/avrcp/hfp / spp/smp/att/ gap/ gatt/ rfcom m/ sdp/ 2ca p
