The Gear 2 is Samsung 2nd-gen smartwatch. Compared to the original Gear, this watch is lighter, offers a better battery life (2-3 days), has a new design and runs the Tizen OS (as compared to Android). The display is the same 1.63" 320x320 (275 PPI) Super AMOLED display. Other features include a 1Ghz dual-core CPU, 4GB of internal memory, 512MB of RAM, infrared, S Voice, heart rate sensor and a 2MP camera (720p video support).

Samsung Galaxy Gear 2

The Gear 2 is now available in the US for $299. Samsung also offers the Gear 2 Neo which is pretty much the same only without a camera, for $199.

OLED type: 

1.63" 320x320 Super AMOLED

Atomic Force Microscopy for next-gen OLED processesAtomic Force Microscopy for next-gen OLED processes