In my opinion the less important fact is the availability in six different strap colours, but maybe this fact is the essential argument for someone to buy one.
It’s not a stand alone device, although the hardware specifications (1.63-inch Super AMOLED display, custom built 800 Mhz processor, 1.9 megapixel camera, 4GB of built-in storage.) would provide enough power to do so.
The Galaxy Gear needs a connection to a Note 3 or Note 10, because that are the only devices that been supported at the moment.
The Android 4.3 update for Samsung mobiles enables the S4 to work with the Galaxy Gear.
The price will be about £200 which will be approximately 236,67 € (05.09.2013) when launched at the end of september.