Headset, Neckband Wireless Bluetooth Headset, V4.1 Headphones Earphones with Microphone & Stereo for iPhone7 Android Smartphones with Magnetic Attraction(Red) Bluetooth V4.1,compatible with Bluetooth enabled devices, such as for iPhone, iPad, HTC, Lenovo, Samsung,etc. Smart Noice Cancellation technology provides crystal clear sound quality,pefect and smooth,Bluetooth Connection with Vocie Prompt Multifunctional keys: power on/off, answer/end/reject call or redial the last call, pause/play, vol-/+, next/previous track Smart & Fully Compatible Design,Super Comfortable Wearing,Unexpected Ultral-long Standby Time,Excellent Sweatproof Smart Operation: No deley,without noise,high quality voice transfer,Bluetooth V4.0 Strong Signal,Latest Bluetooth 4.1 high fidelity sound quality