Secure fit， Vigour has optimized the housing shape for a stable， secure and comfortable fit. Settled over-ear hooks， along with three types of silicon ear tips fit most ears.Extended battery life， large capacity and energy efficient system allows 8 hours of music playtime or 8 hours of talk timeEnhanced Volume allows you to enjoy music at truly loud and clear soundsCable management， two pieces of cord clips adjusting suitable length of the cable， avoiding bouncing around while exercising etc.Durable and stylish， ideal wireless earbuds for the Gym， Hiking， Cycling， Jogging， Climbing without annoying cables， Compatible with most Bluetooth enabled End device such as iPhone 6S 6 6 plus 5 5S 4S iPad， Galaxy S6 S5 Note 3 2， LG G4 G3 and other Smartphones