Name: True Wireless Sleep Earbuds Model: JR-TS3 Chipset: AD6973D4 BT version: V5.3 Audio decoding: AAC, SBC Supported protocols: HFP, A2DP, AVRCP Working frequency: 2402MHz-2483.5MHz Max output power: 4±1dBm (EIRP) BT range: 10m (barrier-free open environment) Frequency response range: 20Hz-20KHz Speaker: φ5mm Music time: about 5h (70% volume) Calling time: about 4h (70% volume) Standby time (connected): about 120h Earbud battery capacity: 30mAh Case battery capacity: 400mAh Earbud charging time: about 1.5h Case recharging time: about 1.5h Cycle counts: about 4 times Case charging port: Type-C Case power input: 5V⎓1A Material: ABS+PC Net weight: earbud (single) 3g; charging case 44 g