Gigastone SmartBox Wi-Fi Enabled Wireless Portable Drive with Mobile Charging (A2-25W) 2500 mAh mobile power charger, up to 8 hours of playback and/or 4 hours of mobile device battery life Wireless SD card reader Wi-Fi file sharing up to 4 devices Stream SD card content to your mobile device Wireless portable drive for your mobile device Great for business travelers & family trips Perfect tool to offload files from your SD cards into your mobile devices Compact, small, fit right in your pocket