Metallic silver Quickly harnesses solar power to charge smartphones and other mobile devices, as fast as plugging into the wall. 3300 mAh battery capacity charges a smartphone 2-3 times Versatile 3-way charging from sun, wall or USB. Removable mPowerpack pocket battery pack (available separately) adds more charging power and portability. Comes with built-in reading light, flashlight and SOS signal. Rugged, water and dust resistant. " "Device capacity: 12.2 Wh Battery capacity: 3300 mAh; 3.7V Internal battery type: Lithium polymer Output: 2 USB ports, 5V, up to 2000 mA Solar panel type: Polycrystalline Charges smartphones (iPhone, Samsung and others): 2 3 times Charges tablets (iPad, Samsung and others): 25 50% Also charges iPods/MP3/MP4, e-readers, USB cameras, GPS, PSP/handheld game consoles, bluetooth speakers and more. Special features: Reading light (35 lumens), flashlight, SOS signal