Orange power bank has 2200 mAh rechargeable lithium ion Grade A battery to charge smartphones, MP3 players and more. Charges via USB cable (included) which can recharge the battery backup or be used to charge devices with a micro-USB input. Input: 5V/800mAh Output: 5V/1000mAh. Measures approximately 1" x 1" x 3½". Screened.