The PowerXTD rechargeable mobile power bank's lithium ion batteries give you 2,000mAh of backup power for your mobile phone or other digital device. It has a matching colored wrist strap, blue charging indicator light and includes a micro USB cable to charge the power bank. Output is rated at 1A. This product has undergone the most rigorous testing in the industry and is UL® Certified, BC (California Energy Commission), and FCC VOC certified.