PACT MKIV XP Timer/Chronograph w/M7 InfraRed SkyScreen System Black. Paired with a full-functioning timer and chronograph you have a powerhouse of functionality. With a clear LCD display complete keyboard ultra loud buzzer and many other features you cant go wrong with the MkIV. The Infrared technology allows you to improve the reliability of your chronograph in less than ideal lighting conditions. In fact you could literally use our chronographs in the dark with the IR system. Specifications for PACT MKIV XP Timer/Chronograph w/M7 InfraRed SkyScreen System: Manufacturer: PACT Color: Black Height: 20 in Width: 6 in Length: 6 in Features of PACT MKIV XP Timer/Chronograph w/M7 InfraRed SkyScreen System Chronograph Functions Shot Timer Functions Measure Rounds/Min for Full Auto Extra Loud Buzzer Full Numeric Keypad Enhanced InfraRed M7 SkyScreen Sensor Kit for enhanced Bullet Detection Package Contents: PACT MKIV XP Timer/Chronograph w/M7 InfraRed SkyScreen System MkIV XP Chronograph M7 Infrared Sensor (x2) 18? Aluminum Bracket Black Plastic Arms (x2) Ported Black Plastic Arms (x2) White Plastic Diffuser Tops (x2) Setup Instructions Product Manual PACT MKIVXP-IR: MKIV XP Timer/Chronograph w/M7 InfraRed SkyScreen System Black