ACETECH Airsoft Bullet Velocity Meter Series BB Bullet Shooting Speed Measurement Initial Velocity Meter Chrono For Gamers

User-friendly interface: 128 x 64 pixel LCD Easy to operate: equipped with 4-way push button Increased durability: IR sensor self-calibration and IR sensor calibration during production Easy-to-use UI: select and change ammunition parameters directly on the main screen Made in Taiwan, high-performance and value-priced bullet velocity meter [Acetech] AC6000MKIII BT Chronograph Bullet Velocity Meter Initial Velocity Meter (Bluetooth) (Premium)