The Xero C1 Pro Chronograph makes ballistics calculations easy. It comfortably fits in your back pocket and can precisely measure projectile velocities from 100 fps to 5,000 fps. This makes the Xero C1 Pro ideal for bullets, arrows, bolts, slugs, birdshot, paintballs and even airsoft BBs. The Xero C1 Chronograph is tripod mounted and picks up on projectiles via radar. Since it doesn't need to be attached to a firearm, it won't affect your zeroing or barrel harmonics. Shot data is immediately displayed on a backlit screen and the purpose-built ShotView app can keep track of your shot data.