Description: 1. BTversion: V5.2 2. Earplug battery capacity: 55mAh 3. Charging box battery capacity: 300mAh 4. Working hours: 220H 5. Standby time: 720H 6 Operation mode: touch 8. Product color: black 10.Battery voltage: 3.7V 11.Input voltage: 5V 12.Transmission distance: 10M 13.Speaker: 20-20khz Specifications: 1. 9D surround sound and dual-mode decoding, the earphone can bring you excited playing and using experience. 2. The Bluetooth-compatible V5.2 technology allows for non-delayed, stable and quick transmission, which can bring you pure and lossless sound effect. 3. Made of ABS material, the Bluetooth earphone is eco-friendly and durable to use. 4. The Bluetooth earphone is suitable for playing games, hands-0 calling, listening to music and so on. Package Included: Earphone*1(Charging box left and right earphones) Charging cable*1 Manual*1