USB Sync Dock Cradle Desktop Charger Black for Samsung Galaxy S3 i9300 (Not included Battery) This cradle allows you to synchronize and your handset with any USB-enabled computer. Just connect the USB cradle to any laptop or desktop pc, you are ready to sync and charge your phone. Attractive green led lights up when (the power is connected or fully charged the 2nd battery Portable design - convenient for travelers and business users Dual Sync Dock Charger (NOT included Battery)