1. Real 10 Hrs Enhanced Battery: less than 2-hr charging, the bluetooth earbud provide up to 10 hours hands-free music and calling (depends on volume), which is one of top records in mini in ear single wireless headphone products. | 2. Light and Small: 0.15oz earpiece makes lower burden for long wearing; small size, nearly hidden in ear | 3. Custom Fit: ergonomics "L" shape design and 3 different sized ear plugs ensure a great sung fit in ear. | 4. Easy Operation: Easily to answer/end calls, play/pause music, songs switch (Next), last call redial through one multi-function button | 5. Multi-point connection: Single Wireless Earbud supports multi-point connection with 2 mobile phones