Dual Drivers Design--- 2pcs dynamic drivers in each channel , total 4pcs drivers inside. Provide deep thick strong and smooth sound . A high level of sound isolation for immersive audio with extended bass response Detachable Cable Design--- High quality gold-plated MMCX connector between ear head and cable. so in the event cable were to fray or break, you need only to replace the cable or a new pair of ear heads. Universal in-line remote compatible with iOS and Android phones. Calling -- answer / end; Music --- play / pause / next track / back track

[TRUE HD HI-FI SOUND] : Using latest Bluetooth 4.1 technology and state of the art acoustic components which produce incredible sound quality with deep bass and crystal clear sound. [COMFORTABLE FIT WITH IPX WATER RESISTANCE] : RayCon E17s feature Ergonomically designed flexible ear buds with gel flex silicone earbuds to ensure your headphones stay comfortably firm in place to guarantee fatigue free ears and tangle free comfort. [AMAZING BATTERY LIFE] : With new and improved lithium polymer battery allows seamless enjoyment of music for up to 8 hours and 240 hours stand-by with a quick charge of only 1.5 hours.