1. Bluetooth Version: V4.1 CSR8635 IPX4 waterproof
2. BT Profile:HSP V1.2 ,A2DP V1.2, AVRCP V1.4, HFP V1.6, DI V1.3
3. Frequency range: 2.402G-2.480G
4. SNR: ≥80dB, Distortion: ≦ 1%
5. Wireless working distance: 10m-20M
6. Rated Power Input:10mm 2*2mW
7. Music time: ≥ 3.7V,60mAH,Maximum volume 3H, 80% volume 5H, 50% volume 10H
8. Standby time : ≥ 60Hours, Charge time: 1Hour
9. supports voice call. Previous/next song, Last phone number redial, Caller phone number voice reporting function. Voice remind. Noise Cancelling. Bluetooth Mandatory entry pairing