CatEye's Q3a features a full suite of standard cycling functions along with
an accurate heart rate monitor and altimeter in a compact, wrist-mounted, downloadable package that's ideal for cyclists, runners and multisport athletes alike. The Q3a allows you to customize your training experience with 5 programmable heart rate zones, up to 99 laps with real time lap functions, and both time and distance interval functions. It also displays your current and ascending altitude measurements as well as the slope angle and the temperature. It includes a handlebar mount and when those open water swims call, it's waterproof up to 30m. Along with your training data, the Q3 will record your total weekly, monthly, and yearly time and distance automatically, too so you can organize and monitor your training goals with ease.