This product is IEC 62133 Certified by UL Underwriters Laboratory. Portable Grade A lithium-ion battery in ABS plastic shell allows you to charge your devices virtually anywhere. Power bank includes standard USB connector cable to charge battery from your computer or any USB port with a power supply. Includes cotton strap with nickel plated split key ring. Input: 5V DC, Capacity: 1800mA, Output: 1000mjA. Lifespan: up to 350 charges. CE and FCC Why UL listed products?