New Portable Electronic Measuring Ruler Multifunctional Tape Measure HD LCD Display Digital High Precision Description:Shell material: aluminum alloy + siliconeShell process: fine polishing + matte sandblastingScreen: 1.8 inch VA LCD screen (white characters on black background) screen cover 4H super hard plexiglassSize: 53*15mm (diameter * thickness)Net weight: 35gSingle ranging: up to 9.99 metersAccumulated ranging: up to 99.99 metersAccuracy: ±0.5%, support stepless adjustmentBacklight time: 30-180 secondsBuzzer: On/OffBattery: 200mAh 0.74w