PowerGen PGMPP8400 has a convenient dual USB port design for charging two device simultaneously. Intelligent circuitry provides safe and highly efficient charging. Top quality battery cells assure long life. PowerGen Mobile Juice Pack is fully compliant with international safety standards. Compatible with: Apple iPhone 4s, 4, 3Gs, 3G, 2G / iPod Touch / iPad 1 2 3 4 [OEM CABLE REQUIRED] HTC One X V S / Sensation XE XL / Thunderbolt / EVO 3D Samsung Galaxy S4 S3 S2 Note / Epic 4G / Galaxy Nexus [NOT Compatible with Galaxy Tab series or Asus Transformer] Blackberry Curve / Storm / Tour / Style / Bold / Torch Motorola Atrix / Bionic / Droid Razr Maxx, X , X2, 2 , 3, 4 / triumph Nokia N900 / N8 / N97 / C6 / C3 / Lumia 800 900 700 LG Optimus , 2x , V , S , T / Quantum / Vortex Sony Experia / X1 / X10 / X8 / Arc / Neo / Play / Mini Amazon Kindle Fire, HD, DX and all other kindles Buy with Confidence Shipped by Amazon 7*24 hours Support 1 Year Limited replacement warranty Specs: - Fully Charged by 1A Adapter: 9-10hrs - Fully Charged by 10w Adapter (Not included): 5-6Hrs - Life Cycle > 500 Times - Input: DC 5V / 1500mA - Output1 : DC 5.3V / 2000mA and DC5.3v / 600mA - Dimension: 3.8 x 2.5 x .87 in. Accessories: - 5 Connectors ( 2xMicro USB, 1xNokia DC 2.0, 1xMini USB, and 1xPSP) - Two Extension cables