• Power bank measures 4.25 inches by 2.25 inches
• Sold in increments of 3 power banks
• Color: black
• Charging cable included
• For use with most smartphones and tablets
• Rechargeable 4000mAh lithium battery
• Input: 5V/1A
• Output: DC 5V/1A (total)
• Up to 30 hours of talk, text, play and browse time
• Charges battery and device simultaneously
• Extends battery stand by time
• LED power indicator light
• Micro USB input port
• Switch ON/OFF