AC 6000 Chronograph by Acetech

Can Measure Muzzle Velocities of 90 fps ~ 1200 fps. Rate of fire range  100~6000RPM. Ammo parameter for 5 memory slots.. User-friendly interface with 128*128 pixel OLED in white color. 25 shot memory slots for velocity and ROF. Auto-calculate MAX, MIN, AVG by shot memory. Energy Per Unit Area Calculation. Extra large tube with diameter of 36mm. Support Micro-USB(5V/0.5A) power input(no battery charge function) or Use AAA battery*4. Tripod mounting screw hole for standard camera and camcorder tripods.