The Casio G-Shock G-Squad GBA-800-1AER is a hybrid watch for men. Link the watch to the G-shock Connected app to your smartphone via Bluetooth. This gives you access to different smart functions. You can use your smartphone to set timers for your interval trainings or to view the graphs of your workout performances. The circle at the top right of your watch shows the progress of your step count goal. You can also view calories burned, the day of the week, and the date. The watch is 20ATM waterproof, which means you can wear this watch when swimming or snorkling.