Never worry about running out of battery power again! Power up your device on the go with this Blue MyBolt 2600 mAh Portable Power Bank featuring a portable flash charger with a standard USB output micro-USB input. This pocket-sized charger can add up to 40 hours of battery life to your device. Includes USB-to-Micro-USB cable for connecting and charging the charger via your computer. Compatible with most smartphones, e-readers, tablets and other devices. Measures approximately 3.625" long x 0.875" in diameter.