Test Model: Contact And photo Range: 2.5 to 99999m/min, 0.5 to 19999m/min, 0.05 to 1999. 9m/min Accuracy: 0.05%1rgd Resolution: 0.1rpm, 0.01m/min, 0.1m/min, 0.1ft/min Sample Frequency: 0.5sec Temperature Max/Min Measuring Low Battery Indication. Tachometer 9110 power:1.5x4battery LCD size:37x50mm Product color:black Product net weight:330g product size:190x72x37mm Standard quantity per carton:20pcs Standard carton size:43x28x56mm Standard carton gross weight:16kg