Supports Micro-USB (5V/0.5A) power input (no battery charge function) or Use (2)AA Alkaline batteries.

• Measures Muzzle Velocity from 30 m/s ~ 400 m/s (90 ft/s ~ 1200 ft/s)
• Ammo parameter setting supports 5 memory slots
• Ammo parameter setting from Weight: 0.01g ~ 9.99g Caliber 4.5mm ~ 18mm
• 25 memory slots for velocity and Rate of fire
• Idling and low battery auto power off function.
• FCC, CE, RoHS compliant
• Tripod Ready mounting hole (Screw for standard camera / camcorder tripods )
• Support Micro-USB(5V/0.5A) power input(no battery charge function)
• ROF range: 100~5000RPM
• Extra large caliber (diameter 24mm)

Note 1:For Gas/CO2 blow back airsoft & Gel blaster, there will be water vapor and mist eruption when fired, and will interfere with IR detection readings.

It is recommended to keep a certain distance from the chronograph when using Gas/CO2 blow back airsoft & Gel blaster to avoid disturbed readings.