RiverSong C72 3 in 1 USB to Cable Micro & Type-c & Lightning

Bluetooth solution: HFP, HSP, A2DP, AVRCP Frequency range: 20Hz-20KHz Connection distance: 10m Speaker size: Φ8mm Impedance range: 32 Ω±5％ Earbud battery capacity: 25mAh Charging case battery capacity: 180mAh Input: 5V == 0.5A Charging time: ~1.5h Playback time: ~3h (volume at 70%) Charging interface: lightning USB Net weight: ~55g