GTR comes with 42mm and 47mm. It's an ultimate fusion of classic and sports styles. Be the most reliable smartwatch from the office to the gym.  The lugs smoothly transition into the frame, reflecting the impression of the flow. The delicate and robust frosted ceramic bezel brings the classic to the wrist but also protects the screen from scratch. Bluetooth calling, music, stand-alone GPS, world-class fitness, and sleep tracking are all tucked behind a crisp and vibrant circular touchscreen with 24 days of worry-free battery life.