Specs
Pros
Pro Elegant design
It has a stainless steel body that makes it feel like a high quality product.
Pro Intuitive interface
Either the dial or swiping can be used to navigate between screens. You access widgets right of the watchface and notifications left of the watchface. You can use the dial to select an app, a button on the side to take a step back or a different button on the side to return to the homescreen.
Pro Doesn't need to be paired with a phone to work
The watch is cellular, meaning it can be used without having to pair it with a phone. It allows making and receiving calls potentially replacing your phone.
Pro Includes a plethora of sensors
Gear S2 3G includes an accelerometer, a barometer, a gyroscope, a heart rate monitor, a proximity sensor, a compass, and a UV light sensor enabling developers to get very creative with their apps.
Pro Battery can last more than 2 days
There's a 300mah battery inside the S2 3G. It lasts 2 days on average with ambient lighting off and 1 day with ambient lighting on.
Pro Good screen
S2 has a 1.2" 360 x 360 (302ppi) Super AMOLED display. It's bright enough to use outdoors and has good viewing angles.
Pro Water and dust resistant
The product is IP68 certified. The certification guarantees that the product can be submerged up to a meter and a half in water at room temperature for up to 30 minutes.
Pro Has a dial that makes interacting with the device easy
The watch has a rotating bezel for interface navigation that's both intuitive to use and provides actual tactile feedback.
Cons
Con Tizen ecosystem lacks quality apps
S2 runs Samsung's own Tizen operating system. It currently has a lot less apps than Android Wear or Apple's Watch OS and a lot of third-party apps perform badly on the device. It's unclear if developers will start to develop Tizen apps in the near future.
Con Proprietary strap mounts on the standard model
Because the strap mounts for the standard model are unique, it will be difficult to find different straps to use with the watch. The S2 Classic has standard 20mm quick-release pins, but that is not available as a 3G variant.
