The Garmin Tactix GPS Navigator ABC watch can be an excellent training tool for cyclists, but it also does much more. The Tactix is your guide, allowing you to record up to 1000 waypoints to get you safely home when you're navigating untracked wilderness. It's shock resistant and water resistant to 50 meters. The battery lasts an incredible 50 hours in GPS mode and up to 5 weeks in watch mode before it needs charging. Tactix is equipped with ABC sensors those are altimeter, barometer, and compass. It also records training data. Distance, pace, cadence, and calories are all measured to help you optimize your training. It's also compatible with Garmin's heart rate monitor, speedcadence bike sensor, and foot pod for indoor or outdoor use. Inspired by the strict requirements mandated by tactical units for the gear they use in the field, the Tactix is all black and built for extreme durability. The scratch resistant, curved lens prevents reflection that can give away your position, and the green backlight won't flare out night vision goggles.