bluetooth speaker Durable nano-coating efficiently protects sport headsets from sweat and rain. With Over Ear Hook Mold to Your Ears to Stay Comfortably and Securely in Place no matter what is your activity - gym, running, working out, cycling, travelling, yoga, etc. Improved lithium polymer battery (Lightweight Enough, not like other headphones) brings up to 7-9 hours pleasure musically and socially with a quick charge of only 1-2 hours. Adopting latest Wireless Headphones Bluetooth 4.1+ EDR Technology, best CSR Chip and superior acoustic components, these headphones produce incredible sound quality with dynamic listening experience. CVC 6.0 technology greatly reduce background noise, enable much more clear music and microphone sound. Made of ergonomic design, bluetooth earbuds stay comfortably firm in place to guarantee fatigue free ears comfort,