This laser distance meter is compact and multifunctional, capable of quickly measuring distance, area, volume, and Pythagorean calculations. The digital LCD display with backlight ensures clear visibility in low-light conditions. It supports reference point switching to meet various measurement needs. Powered by batteries, it is lightweight and easy to carry.Features: Laser Measure with Horizontal Bubble High-precision laser range finder with fast measurement; 100m (328ft) measuring range suits a variety of applications. Dual horizontal bubbles allow for more accurate leveling compared to single bubble models. Multifunctional Measurement Quickly measures distance, area, volume, and Pythagorean values; supports unit switching between m/ft/ft'/in/in"; includes continuous, maximum, and minimum measurement modes; supports addition and subtraction functions; stores up to 99 measurement records. LCD Display & Mute Mode Digital LCD screen with backlight improves readability; laser, backlight, and device automatically power off to conserve energy. Beep sound can be disabled for quiet environments such as libraries or classrooms. Datum Mark & Countdown Supports front, back, or customizable reference points (a, b) based on measurement requirements; reference point can be easily switched. Includes a countdown function for improved usability. Compact & Portable Small and lightweight design includes a wrist strap and carrying pouch for convenience. Operates on 2 AAA batteries (not included); features low battery indicator for timely replacement.Note: Slight variations in size and color may occur due to manual measurement and lighting conditions. Specifications: Dual Level Bubble: with/without (Optional) Color: Black Material: ABS Screen: LCD with Backlight Measuring Range: 100m (328ft) Accuracy: Level 2 Measuring Accuracy: 1.5mm Unit: m/ft/ft'/in/in" Measurement Functions: Distance, Area, Volume, Pythagorean Reference Point: Front/Back/Settable (a, b) Addition/Subtraction Function: Yes Continuous/Max/Min Measurement: Yes Data Storage: 99 History Records Countdown Function: Yes Beep: Yes Laser Type: Class II, 630-670nm, 1mW Waterproof Level: IP40 Laser Beam Auto Off Time: Approximately 30 seconds Instrument Auto Off Time: Approximately 3 minutes Power Supply: 2 x 1.5V AAA Battery (NOT included) Item Size: 113 x 50 x 26mm / 4.45 x 1.97 x 1.02in Item Weight (without battery): 83g / 2.92oz Package Size: 15 x 8 x 6cm / 5.91 x 3.15 x 2.36in Package Weight: 151g / 5.32oz Package List: 1 x Laser Range Finder 1 x Wrist Strap 1 x Pouch 1 x User Manual (English)