Kool (TM) Desk Desktop Dock Docking Station Battery Charger Charging Cradle Mount Black For Samsung Galaxy S3/ S4/ Note 2/ Note 3 + Extra Replacement Battery (3100mAh)-Black Bonus: A FREE USB Date Cable (Samsung Galaxy Note 2) Dual docking station and battery charger for Samsung Galaxy S3/ S4/ Note 2/ Note 3. Supports USB 3.0 for faster charging and data transmission Compact, lightweight, portable design and easy to carry anywhere, with high performance charge. Allows dual charging: Support charging battery and phone at the same time. Bundle comes with a spare battery so you can also switch to a new spare battery for long trips. USB Cable included to charge your phone and batteries.