AceTech AC5000 Compact Airsoft / Airgun Chronograph

Features: High strength, lightweight polymer construction Measures muzzle velocity in meters and feet per second Measures rate of fire in rounders per second and minute Easy to use controls & user-friendly LCD display Idling and low battery auto power off function Adjusts calculations based upon BB caliber and weight Compatible with 4.5mm, 6mm, 8mm and 18mm BB Has 25 memory slots to record velocity and rate of fire Built-in camera tri-pod screw on mount Powered by 2x AA batteries or Micro USB (not included)