ACETECH Airsoft Bullet Velocity Meter Series BB Bullet Shooting Speed Measurement Initial Velocity Meter Chrono for Gamers BT (AC6000MKIII (Bluetooth

User-friendly interface: 128x64 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: Ammunition parameters can be selected and changed directly on the main screen Made in Taiwan, high-performance and value-price bullet velocity meter [Acetech] AC6000MKIII BT Chronograph Bullet Velocity Meter Initial Velocity Meter (Bluetooth) (Premium)