"1. Bluetooth 5.3; Chip: JL 6983D4 2. Battery capacity: charging box 250mAh (protective plate), headset 30mAh 3. Talk/music time: 4 hours; Standby for 240 hours 4. Fast connection, low delay, low power consumption, HIFI sound quality, stereo surround, support for binaural switching, high-definition call noise reduction, instant connection, delay free audio and picture synchronization of games, and strong sense of transparent aesthetics and technology. 5. With charging cable and packaging"