Firearms Shot Timer: Audio timing, precise timing for continuous firing, universal. 22.38.45 9mm, 5.56, 7.62 and 12.7 caliber
IP4 waterproof: Suitable for outdoors, it can work even in rainy days.
LED display: Shot timer can be wireless connected the LED large-screen display to make scores be clearer at a stage.
Easy to operate:Graphical guide and indicator light guide, which button lightened where to press.