Description    DOCK is provided with charging and OTG functions， both of which can be realized    through change-over switch. Dock can make it possible to realize the charging of    Galaxy Tab of external battery charging chute， data synchronization and Galaxy Tab   OTG function. There is one switch and USB port at the right side of Dock. The data can    be transmitted to your PC synchronously when charging Galaxy Tab through connection.   OTG connection of Galaxy Tab can make it easy to download your photos or Galaxy    Tab of USB flash disk from digital camera. Galaxy Tab can also realize the function of    mouse and keyboard.<br>  <br> Features:<br> 1. Design for S4\/i9500 Data transmission， Battery Charging and Phone Charging. <br> 2. Supports OTG.<br> 3. Built-in protection circuit， prevents overcharging and heats.<br> 4. Compact and portable design， convenient for travelers and business use.<br> 5. Can charge phone and battery syncing， charge them alone， or charge with    <br>     computer.<br> 6. Synchronously charge two battery， without wasting time， fit for your busy  <br>     modern life.<br> 7. Using as a desktop cradle， convenient for taking and make your desk in  <br>     good order.<br> 8. Charging your phone and battery with any USB-enabled Notebook\/PC<br>     \/MAC\/AC adapter.<br>  <br> Specifications:<br> Material: ABS<br> Weight: 120g<br> Color: Black， White<br> USB Interface: Micro USB<br> Dimension: 100x80x35mm(approx.)<br> Compatible with: Samsung S4\/i9500<br>  <br> Package include:<br> 1 x Desktop Cradle Sync Battery Charger Dock (phone and battery not included)  More Details: