Wireless bluetooth 4.1 Stereo Bluetooth Headphones by Sunwand Neckband Style Universal Vibration In-ear Noise Reduction Earphones with Microphone & Magnetic Holders for Light Sports (Black) Unique Neckband Designed: The neck wireless bluetooth earphone has lightweight and comfortable neckband designed, made of ultra-light shape memory alloy, especially for easy carrying for all day comfort. Sunwand neck sports bluetooth headphone ensures a 100% comfortable fit when you are hiking, cycling, exercising and staying at home or in the office; This neck wireless bluetooth headsets easy to handle ear set with Magnetic Holders. Neck wireless bluetooth headsets has bluetooth 4.1 CSR BC8 Chipset with A2DP stereo tech provides you a Hi-Fi quality stereo music, crystal clear sound; Sunwand neck wireless bluetooth headphone has In-coming phone number reporting and connect Two phones simultaneously, you'll never miss any phone call. Sunwand neck wireless bluetooth headsets apply One Key Switch Function: It's easier to operate the neck wireless bluetooth earphone with just on key function no need to press and hold the button for 7 seconds;neck sports bluetooth headphone has Vibrating Alert on power on/off so if you can't hear it you can still feel it; Also with pause & play; next & previous song; answer & hang up call; volume +/- button to control. Neck wireless bluetooth headphone outstanding Long Battery Life: Sunwand neck wireless bluetooth headsets build in 350mAh rechargeable Li-Polymer battery, 20 hrs music play time, 20 hrs talk time, 500 hrs standby time with a full charge; Battery level of the neck wireless bluetooth headphone will be displayed on iPhone. Noise Reduction Technology: Built-in neck wireless bluetooth headphone with latest CVC noise reduction and echo cancellation tech, let you get high quality music, hands-free phone conversation with clear voice even in noisy environment like inside a gym and running/cycling on the road.