Rechargealbe/energy saving. can test the airsoft B.B. even paintball Handheld small size: 12.5CM x 5.5CM x 5CM Color: BLACK

B.B. Chronograph /  Speed Reader.

Velocity: FPS/MPS.

Fire Rate: Balls per second BPS/BPM.

Pre-set B.B weight v.s. energy(Joule) 0.20g, 0.21g, 0.22g, 0.23g, 0.24g, 0.25g, 0.26g, 0.27g, 0.28g, 0.29g, 0.30g, 0.31g, 0.32g, 0.33g, 0.43g, 0.89g.

Extra large size diameter: 20mm. You can even measure the velocity of paintball.

Using rechargable Ni-MH aaa 1.2V batteries x2 (not included).

Handheld small size: 12.5CM x 5.5CM x 5CM.

Come with short USB connector.

Plain box packaging.

Rechargealbe/energy saving airsoft (B.B.)chronograph / speed reader