Electronic Level Control Function: With Electronic Level Control Function ,the angle of inclination display on screen, which provides more precise measurement;With laser precision technology, accuracy ups to 2mm, measuring distance extends to 50m; Switchable among M/In/Ft/In+Ft for free adjustment LCD BACKLIGHT & MUTE SETTING: Large backlight screen provides you with a better visibility in dark areas; Mute setting allows you turn on or off measure beep at your , suitable for using in library, classroom and other quite places,the laser level is ideal for home, construction and industries, especially in large areas such as rooms, apartments, buildings, real estates, factories, warehouses, etc VERSATILITY: Angel(optional), area, distance, length, volume, continuous measurement, Pythagorean method-three points; Addition and subtraction; Low battery indication; 20 groups data memory; Manually delete data; Auto shut down after 150s without any operation to save power AND PORTABLE DESIGN: IP54 waterproof level and dust-proof function protect laser distance measure to maximum extent; Portable size and hard rubber body provide a good grip; Wrist strap lets you hold meter steady and carry easily Maximum measuring range:=50m unit of measurement:m/ft/in/ft+in Historical measurement record:30 groups Laser level:Class2 operating temperature:0C-+40C Laser type:630-670nm,Less than 1mw Storage temperature:-10C-+60C (The product appearance and printed words depending on batch, but this does not affect use) Color: As Shown Material: ABS Package Contents: 1 * Laser Distance Meter Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.