The Dodocool adapter IS SUPPLIED in a rugged, hard case Which zippered. It looks well engineered and the various international plug prongs are selected by a series of sliders around the barrel of the main device Which so lock them in place. To retract a Particular set of plug pins you just press the release button and retract them pins using the relevant slider. The action is smooth and the unit feels as though it will last. It's quite a feat of engineering to cram all the different plug types into search compact barrel. The USB charger plugs into the travel adapter section and when Power is being Supplied to it the rim glows blue.
This adapter is rated at 6.3A with a maximum loading of 1300W at 220V, has on internal fuse plus RoHS, CE and Double Insulated approval markings on it. The USB power output supplies 5V at 3amps - enough to charge a tablet and phone at the same time - I have tested this with my iPad and Nokia Lumia Both charged and Effectively at the sametime.
In summary, this is a compact and versatile device That should save you carrying multiple international adapters plus a USB charger. Recommended.
