Zonstyle Bh-m56 Wireless Bluetooth 4.1 Hands-free Stereo Headset with Microphone for Sports Music Bluetooth Hands-free Speaker Phone Gaming - Black Sports Stereo Bluetooth Headset,that designed specifically for sports. It comes with waterproof level IP3, not less than eight hours of time for listening to music under maximum volume and very convenient for charging(use standard micro USB jack, 5V charging voltage). support bluetooth 4.1 communication protocol (HFP V1.6, HSP V1.2, A2DP, V1.2, AVRCP V1.4), TTS voice prompt. Neckband design, the movement will not easily fall off, the ultimate experience. Symbol of fashion, generous sign: available for friends and relatives gifts, business gifts, sweepstakes and other activities.