Garmin Xero C1 Pro Chronograph The most essential data for ballistics calculations is projectile speed. A chronograph is the best tool for the job. Whether you're handloading for the range or building arrows for the hunt, the Xero C1 Pro chronograph provides the speed data you need to hone your craft. Features: Measure projectile speeds from 100 fps to 5,000 fps. The button-operated design is simple to use. Pair with the ShotView(TM) smartphone app to track your shots, measure deviation and more. It's built to endure the elements with an IPX7 water-resistant rating. The compact design fits in your back pocket and is easy to set up. Battery life for up to 2,000 shots or up to 6 hours gives you plenty of time at the range. Benefits: RELIABLE PERFORMANCE- The chronograph will reliably pick up your shots, thanks to the sensitive and accurate sensor. VERSATILE PERFORMANCE- The device can measure projectile speeds from 100 fps to 5,000 fps for bullets, arrows, slugs, airsoft BBs, pellets and paintballs. EASY TO OPERATE- Indoor and outdoor operation is simple, thanks to the backlit display and button-operated design. PURPOSE-BUILT APP- Keep track of your shots, measure deviation and more when paired with the ShotView app on your compatible smartphone. SIMPLE SETUP- Turn it on. Set it up. Point it in the direction of fire, and shoot. RECHARGEABLE BATTERY- With battery life for up to 2,000 shots or up to 6 hours, there's no rush. Take your time at the range while you experiment and fine-tune your setup. SUPPRESSOR SUPPORT- Since the unit isn't triggered by muzzle blast, it picks up shots from suppressed firearms and firearms with muzzle brakes or compensators.