The Power bank 20 000 mAh is perfect for charging your smartphone or devices on the go or when extra battery power is needed. Features: - Stylish portable design. - Ergonomic arc design. - A- Grade lithium battery, safe. - Optimized charging efficiency - Intelligent IC circuit management. Specifications: - Capacity: 20 000 mAh - Suitable for nearly all kinds of mobile phones and digital devices which have USB cable connector.