1. Bluetooth: Bluetooth 4.2
2. In-ear type wireless, open box automatically pairing; double-click touch music and incoming calls; IP54 dust-proof and splash-proof
3. Double click on the touch, noise reduction call, 12 hours listening
4. Support music playback effective frequency bandwidth 20 Hz-20,000 Hz
5. Battery capacity headset 55mAh lithium ion polymer button battery; charging box 410mAh lithium ion polymer battery
6. Power input 5.2V-1.1A