: Ensure the package contains the laser distance meter, two 1.5V AAA batteries, a wrist strap, a carrying pouch, and the user manual. Battery Installation :

: Store the device in its pouch in a cool, dry place. If you won't use it for a long time, remove the batteries to prevent corrosion. DTAPE DT50 Laser Distance Meter User Manual - Scribd

: Instead of multiplying numbers manually, you can set the device to "Area" mode, measure the length and width of a room, and let the LCD instantly display the total square footage. The Pythagorean Mode

: Loop the included wrist strap through the attachment point on the device to prevent accidental drops and improve stability during measurement.