S11-HD Sports Stereo Bluetooth v4.0 Neckband Headset w/ NFC / Microphone - Black + White
1. NFC near distance automatic matching. 2. Coming calls number prompt. 3. Voice control the coming calls say "yes" to answer say "no" to refuse. 4. Volume adjustment the last / next song adjustment. 5. Dual-microphone noise cancellation more clear sound. 6. Stereo sound performance supports two devices connection at the same time. 7. Working band: 2.4GHz~2.48GHz