Bluetooth Wireless Stereo Neckband Earbuds - Black Bluetooth 4.0 Neckband Headphones, Stereo Shocking Bass, Noise Reduction Wireless Bluetooth Headset with HD Mic Auto Retractable Earbuds 12 Hrs Playtime Sports Earphones for Gym Running Traving, Gift Universal Wireless Bluetooth Headset Headphones Stereo Neckband Sports Earbuds with Mic for Cell Phone - Black Description: Bluetooth version: V4.0 Battery: Battery 3.7V/180mAh Color:Black,White Feature: Unique ring-necked design, opening up a new area of bluetooth earphones Ultralight elestic memory material, easy to carry Vibrate to remind you not to miss any incoming calls High-fidelity stereo audio earphones enjoy entertainment Intelligent noise reduction, clearer calls Long standby, long call Compatible with standard bluetooth-enabled mobile phone, media devices Answer/end/reject a call Last number redial, voice dialing, transfer a call, call waiting Package including: 1 x Wireless Bluetooth Headsets 1 x USB Cable Advanced Quad layer speaker technology Dual mems microphones - delivers crystal clear conversation Delivers crystal clear conversation Slim & sleek design with small/ light retractable wire management technology Fast pairing