Fangrui Product Details Mini Size, Convenient And Practical. ,compact And Portable. 8 Functions, Simple Operation With Three Keys. 99 Meters Long Distance Measurement. Lithium Battery Direct Charge, 200 Days Long Standby. Power Type:rechargeable Product Name: Small Q Electronic Ruler Screen: 1.8 Inch Va Lcd Screen (white Text On Black Background) Shell Process: Fine Polishing + Matte Blasting Screen Cover: 4h Super Hard Plexiglass Single Measurement Distance: Up To 9.99 Meters Accumulated Ranging: Up To 99.99 Meters Accuracy: 0., Support Stepless Adjustment Backlight Time: 30-180 Seconds Buzzer: On / Off Battery: 200mah 0.74wh Charging Interface: Type-c Colour:as Shown Material:aluminum Alloy + Silicone + Glass Package Contents: 1 X Electronic Ruler 1 X Type-c Charging Cable Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.