Tayogo Active Sport Bluetooth 2-in-1 Waterproof anti-sweat Headset and Microphone for Hands-free Call Answering (White) Unique Design - The headband is made from a tough flexible plastic with rubberised tips that clasp on to your head.Headphones and USB main player separate design.detachable USB main player to be charged,protect and increase of its service life. Longer Battery Life - The lithium polymer battery allows seamless enjoyment of music for up to 8 hours and 24hours stand-by with a quick charge of only 1.5 hours. Waterproof & Heatproof - Its IPX8 waterproof make it come true to enjoy music under the water,its heatproof keep it working fine even in hot water which temperature is no more than 60/180,you can also enjoy music even in showering or hot spring. Customizable Fit - Multi-size earbuds(3 pairs for land use and 2 pair for water use) give more choices to fit for purpose(swimming,hiking,showering etc) and provide a sturdy, comfortable hold. Warrenty - 30 days No-question-asked full refund and Offer 12-month replacement parts freely to all customers who buy it from Tayogo