Specifications:It has distance/area/volume measurement and pythagorean proposition indirect measurement function.The product has bluetooth-compatible & broadcast voice.You can use it for single/continuous measurement and addition/subtraction measurement.Its units and benchmark are selectable. The rangefinder has automatic horizontal and vertical function.This item has built-in rechargeable battery for power supply.Type: RangefinderMaterial: PlasticMeasure Range: 60m/80m/100m (Optional)Accuracy: ±2mmTest Time: 0.2-3sLCD Screen: FSTN with BacklightButtons: 7Unit: m/ft/in/ft+inData Storage: 99 GroupsBenchmark: SupportSingle/Continuous Measurement: SupportDistance/Area/Volume Measurement: SupportPythagorean Law Measurement: SupportAddition and Subtraction: SupportVoice Broadcast: SupportAuto Power Off: No Operation in 2 MinutesLaser Off Time: 30sBattery: Built-in 850mAh Rechargeable Battery(Included)Protection Level: IP40Working Temperature: 0~40 Degree CelsiusStorage Temperature: -10~60 Degree CelsiusFeatures: Rechargeable, Durable, Portable, PreciseSize: 115mm x 51mm x 23mm/4.53" x 2.01" x 0.91" (Approx.)Notes:Due to the light and screen setting difference, the color of item may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Rangefinder1 x Charging Cable1 x User Manual