* Item NO.: FYD-815 * Capacity: 4000mAh (shake power bank) * Input: 5V/1A * Output: 5V/1.5A * Cell: Lithium polymer battery * Charging time: 4-5H * Shell material: Metal aluminum alloy * Size: 115*63*12mm * Net weig: 125g Inside disk specification: * Interface: USB 2.0 * Chip: Toshiba * Operating Systems: Windows 8/7/Vista/XP/ME/98 , Mac OS 9.0+, Linux * Operating Temperatures: 0-60 ℃ * Storage Temperatures:-20-85 ℃ http://www.cocopowerbank.com