... power for digital device like iphone, ipad, Samsung P1000,cell phone,mp3,mp4 and more through USB output port.3. Powerful ... Design by aluminum alloy shell, artistic, fashion, top grade and with prevent scratch function. Product Specification:Battery Cell Type:18650 Lithium-ion ... press button again within 20 second.Charge digital device like cell phone,ipad,mp3,mp4,iphone,psp .1. Connect USB cable ...