Kootek Dock Charger Cradle for Samsung Galaxy S4 S IV with Charging Spare Battery and Audio-out (compatible without or with a slim-fit case, white)
This Case Compatible design cradle connects with your Smartphone to Sync & Charge either enclosed in a protective case or without, it also supports 2nd battery charging at the same time, keeping your Smartphone charged and ready to go!Features: Audio-out directly via Micro USB Sleek and stylish design Case adaptor design can fit phone with or without case With Spare Battery Charging Slot.If you want to realize connect to computer with USB and also connect audio out the same time, you have to tick these four options in your phone set: setting- Accessory. then tick these four options: Dock sound, Audio output mode, Desk home screen display, Automatic unlock.If you would like to charge Battery and Phone at the same time, please use the charger over 1A.