Features:  3 in 1 Multi Function Laser Measure -- 5m (16.4ft) measuring tape, digital electronic tape, 40m (131.2ft) laser ranger finder. 2-inch digital LCD screen with backlight enhances the reading experience, easy to read no matter in the day or at night.  Multi-purpose & Data Storage -- High precision and quick measurement of distance, area, volume and Pythagorean; supports single/ continuous measurement, addition/ subtraction. With 20 sets of historical data storage and unit switching (m/ in/ ft) function.  Front/ Back Reference & Self-Lock -- Supports front or back reference point according to the measurement requirements, easy to switch. Supports self-lock function to prevent your fingers from being hurt by the measuring tape and also supports retractable design.  High Quality & Easy Use -- ABS casing is wear resistant, pressure resistant and dustproof, durable to use. Mini and lightweight, easy storage and portability. With metal buckle, it can be hung on the belt for convenient use during work.  Rechargeable & Wide Use -- Built in with 300mAh lithium battery, with strong endurance, easy to charge it via equipped USB cable. The multi-purpose laser range finder can be widely used in short or long distance measurement of woodworking, home decoration, construction site and so on.    Note: Size and color may be slightly different because of manual measurement and different light conditions. Thanks for understanding.    Specifications:  Color: Black & Red/ Black & Gold/ Blue & Silver (Optional)  Material: ABS + Steel  Display: 2" LCD Digital  Tape Measuring Range: 5m / 16.4ft  Laser Measuring Range: 40m / 131.2ft  Unit: m/ in/ ft  Accuracy: ±2mm  Laser Measuring Time: 0.1-3S  Laser Auto off: Yes  Product Auto off: Yes  Measurement: Distance/ Area/ Volume/ Pythagorean  Data Storage: 20 Sets  Built-in Battery: 1 * 3.7V 300mAh Lithium Battery  Item Size: 73 * 73 * 40mm / 2.87 * 2.87 * 1.57in  Package Size: 15 * 11 * 5cm / 5.91 * 4.33 * 1.97in  Package Weight: 350g / 12.35oz    Package List:  1 * Laser Range Finder  1 * USB Cable