The 2-in-1 Digital Laser Tape Measure by Sharper Image has a large digital LCD screen that makes taking measurements easier and more accurate. It shows measurements in feet, inches, centimeters, decimals and fractions. You can also save up to 2 measurements automatically. Features center line calculation and a blade lock. Plus, the ability to measure inside the length of the frame without folding or bending the blade. • Features large backlit LCD screen • Saves up to 2 measurements automatically • Ability to measure inside the length of the frame without folding or bending the blade • Centerline calculation • Unit change: ft/in/cm • Midpoint function • Blade lock function • Laser distance meter: Range 0.2~40m, Accuracy: ±1.5mm • Blade length: 16 feet/ 5 meters • Auto on and auto off (after 5 minutes of non-use) • Measurement units: • Feet, Inches, Fractions (to 1/16") • Inches and Fractions, to 1/16th of an inch (ex. 31 3/16″) • Decimal Inches, to 1/10th of an inch (ex. 31.1″) • Decimal Feet, to 1/100th of a foot (ex. 2.59′) • Centimeters, to 1/10 of a Centimeter (ex. 79.1 cm) • Includes a micro 5-pin charger • Operates on a rechargeable lithium ion (polymer) battery • Charges via USB