Feature:- With data hold function for easy reading of measurement data.- 1.44" large digital display with backlight.- Small and lightweight, easy to carry around.- 5 minutes auto power off, much power saving.- The digital readout will reverse automatically, convenient to read.- Apply in: woodworking, construction, machinery, telecommunications, automobile, etc.Specification:Model: GR20Accuracy: 0.2Display Resolution: 0.001Screen: 1.44 Inch ScreenProduct Size: 60.6x60.6x30.8mmMeasuring Range: 4*90/2*180Charging: USB ChargingBattery: 3.7V 300mAh lithium batteryProtection level: IP54Data HOLD: YESMagnet Function:YESAngle / Slope Conversion :YEVRelative / Absolute Measurement: YESDigital Horizontal Bubble:YESAutomatic Shut-down:5minutesPackage included:1x Digital Protractor Laser / About service /On- Time DeliveryFull refund if product isn't received in guaranteed delivery timeLonger Protection15 day more protection after order completionReturns ExtraReturn any product,only those in perfect conditionGuaranteed QualityGuaranteed Quality or Full refundIf you have any problems with our items or services, please feel free to contact us first before you leave negative feedback. We will do our best to solve any problem and provide you with the best customer services.