General Tools TS01 100&rsquo; Laser Measure, Bluetooth Connected, Calculates Area, Distance and Volume, Real-Time Measuring MEASURE FURTHER: Measure up to 100-feet with the push of a button BACKLIT DISPLAY: Laser measure is easy to read from all angles. Saves and displays the last four measurements taken MEASURE SMARTER- Quickly calculate square footage, volume, and height. Perfect for estimating paint, flooring, tiles, and more REAL-TIME MEASURING: Walk-off measurements from the wall and other surfaces to find precise distances. Continuous measurement that adjusts as you move closer and farther from target, just like a tape measure VERSATILE: Ability to switch between measuring in meters, feet/inches or inches only EXTREMELY PRECISE: Measures distances extremely accurately up to 100-feet to within 1/16-inch COMPACT SIZE: Portable and compact size laser measure easily fits in your hand and carries in your pocket BLUETOOTH CONNECTED: Use alone or connect to your smartphone with the free ToolSmart app CLASS II LASER PRODUCT &lt;1mW power output