Casio G-Shock Black/Red GBD-100 with negative face. Pairs with your phone.

Rugged design with digital display. Features black and red accents. Ideal for active lifestyles. These watches can link with the GPS of a smartphone for quicker calibration of distance measurements, enabling more accurate running distance measurements, even during use without a phone connection. Distance measurements used in combination with the stopwatch let you keep track of your running pace, and also enable use of an Auto Lap feature that automatically keeps track of times over a specific distance. Other standard features include a step tracker (pedometer), interval timers (up to 20 sets of five timers each), lap time measurement (up to 140 records for up to 100 runs), and calories burned measurement, all of which provide plenty of support for your daily training. Surprisingly low profile for such a tough G-Shock.