This timepiece adds intensity to the cutting-edge metal timepiece technology of the MT-G line with an interchangeable watchband set. Which are you feeling today — the MTG-B2000 layered-metal-composite band, or the dashing red resin band? Comes with a tool to easily switch between the two using the double slide lever on the metal case. Ion plated entirely in black from case to bezel to band and accented with touches of striking red. Pairs with a smartphone via Bluetooth®. Just download and log into the G-SHOCK Connected app to keep the time constantly updated , even when you cross time zones. Even offline, the watch calibrates with radio-wave time signals in six world regions to keep you on time. TOUGH SOLAR technology from Casio generates plenty of juice to power the high-brightness LED lighting, dual time, stopwatch, and other handy, reliable functions.