XCORTECH X3200 MK3 Bullet Speed Gauge with Japanese Instruction Manual

Measurement range: Muzzle velocity: 30.0-400.0 (m/s), Firing cycle: 100-5000 (rounds/min) Chronograph specifications: Tripod socket included (standard camera tripod screw standard) Tube diameter: 24mm : 2 AA batteries External power terminal: micro USB (5V/0.5A) No rechargeable battery charging function Size: 113 x 97 x 55 mm (length x width x height) Weight: 205g Battery type: Batteries are sold separately, so please purchase them separately.