Bluetooth v5.3 Charging Voltage: 3.7v Charging Port: Type-C Battery Capacity: 25 mAh/earbud, 250 mAh rechargeable case Playback/Music time: 5-hours Standby Time: 20-hours Earbuds Touch Control: Voice Assistance, Music, Call Modes USB to Type-C charging cable included. Size: H 1 1/4˝ x W 3 7/16˝ x D 1 1/4˝