Compact size, 113mm (L) x 70mm (W) x 28mm (H) Built-in 9000mAh 18650 lithium battery Input: AC input 100-240V/0.3A Output: Micro USB connector: up to 1A maximum at 5V DC USB A port: up to 2.1A maximum at 5V DC LED light to show battery level and charging status Automatic power On/Off Built-in overcharge/discharge protection Supports most devices with USB charging port Ideal for long flights, outdoor activities, or anytime your devices might run out of power