EnerPlex Jumpr Prime 4400 Power Bank for Smartphones, MP3 Players and Other Mobile Devices (JU-PRIME-44) POWERFUL - Its 4,400 mAh battery provides multiple charges for your favorite electronics: Smartphones - 2X Charges; Action Cameras - 3X Charges; MP3 Players - 4X Charges PORTABLE - Built to easily fit into a pocket, purse, or bag. You can charge up wherever your day takes you. DUAL CHARGING - Its two USB Ports allow you to charge multiple devices simultaneously. HIGH-AMPERAGE OUTPUTS - The Jumpr Prime has been built to charge your most power-hungry USB devices, including the newest tablets on the market. SOLAR COMPATIBLE - Recharge your Jumpr Prime via a standard wall outlet, or via one of our award-winning EnerPlex solar chargers.