Bluetooth Headphones , Bluetooth 4.0 Wireless Neckband Headset with Retractable Earbuds, Sports Sweatproof Noise Cancelling Earphones

Product description 
Colour：All black, black white, black purple, black blue, black red 
1.【 Bluetooth 4.0】: With the latest Bluetooth 4.0 ，this Bluetooth headphones offer enhanced sound transmission, faster pairing, more stable wireless connection and wider compatibility with Bluetooth enabled cell phones, tablets, computers, smart watches. 
2.【Call Vibration &Noise-Cancelling Mic】: Bluetooth headset will vibrate when a call comes in so that you won't miss any calls even you are doing exercise or in noisy place. The built-in ; noise-cancelling microphone can reduce background noises so as to provide crystal-clear sound for hands-free calls. 
3.【Playtime】: Its powerful rechargeable ; battery provides up to 10 hours of continuous music or phone conversation with a single full charge. 
4.【Auto Retractable Earbuds】:You could pull each ear bud up to the maximum length when you use it. Pull it again and it shrinks in when you don't use it, Very convenient especially when running.We adopt high quality wire 
5.【Lightweight Neckband 】: ; Design by ergonomics will let it fit your ear firmly, the lightweight material provide safe wearing without pain and the ears won’t feel discomfort after you wear long time.

WARNING: BUTTON/COIN BATTERIES ARE HAZARDOUS. KEEP OUT OF REACH OF CHILDREN

Swallowing or placing a lithium button battery inside any part of the body can cause severe injury or death in 2 hours or less.
Swallowing or placing a non-lithium button battery inside any part of the body can cause serious injuries.
Medical attention should be sought immediately if you suspect that your child has swallowed or placed a button battery inside any part of the body.
Call the 24-hour Poisons Information Centre on 13 11 26 (Australia) or 0800 764 766 (New Zealand) for fast, expert advice.
Regularly examine devices and make sure the battery compartment is correctly secured, e.g., that the screw or other mechanical fastener is tightened. Do not use if the compartment is not secure.
Dispose of used batteries immediately and safely out of reach of children.