DACOM G02 Silver Wireless Bluetooth Sport Earphones Deep Bass Earbuds Headphones with Build-In Mic, Silver New technology of Bluetooth 4.1 - Make your earphone more stable with the connecting device Long lasting 8 hours li-ion battery, satisfy your spare time. 1.5 hours charging time with USB port Ergonomic designed - Comfortable and lightweight wireless earphones with ear tip, very secure under state of motion Build-in microphone and hands-free, sweat- and water-resistant design for increased durability Elegantly designed - All of the buttons are together on the ear bud part, fashion and practical, suit for Cycling, Hiking, Yoga, Gym, Jogging and so one