Sgin Wireless Bluetooth Headphones Foldable Noise Cancelling On Ear Headset Stereo with In-line Microphone Sweatproof Extremely Portable and Adjustable for Smart Phones ipad Quality assurance: Sgin headphones to audio technology in 2016 to manufacture the highest quality standards. Integrated CSR audio technology ensures clear voice, distortion rate is only 0.01%. Voice call settings, so you have a similar feeling of face to face conversation. Weight and space: Sgin headset is lightweight headset to advocate for the design of a lightweight style wireless Bluetooth headset; After use easily fold and put in to receive bag. Features: the appearance of design, whether to watch or touch both comforting and comfortable to wear; wear different groups do not have any discomfort. Life: Battery can support 150 hours standby; maximum use of time up to 8 hours! It supports all Bluetooth devices. Commitment: for any reason, you get the hand headset do not like, simply return it, we will replace or refund every penny! We don't ask you any questions, it is our commitment to all customers! (Not the best thing, only the most suitable for your stuff!)