Features: 3-In-1 Tool: Combining a laser measure, tape measure, and cross-line laser leveler, this tool will be your secret-tool on any project. Expertly take long-distance measurements, get precise tape measurements, and never double-check if lines are straight again. One-key ranging, high-definition digital display: laser ranging, error 2mm. Coated manganese steel tape: two scales (inch scale, metrics scale). Self-locking device of ruler belt,automatically lock the current measurement position after the ruler belt is pulled out, and press the unlock button to automatically,which is safe and does not hurt hands. Effortless-Precision: Imagine effortlessly measuring high ceilings and hard-to-reach areas with just the touch of a button. The 3 in 1 Infrared Laser Tape Ruler makes it a realitys, bringing eases to your measurements. Notice: Actual color may be slightly different from the image due to different display and light effect. Please allow 1-3cm deviation due to manual measurement. Material: coated manganese steel Battery: 2 * 1.5V AAA battery Laser measuring ranges: 40m Laser type: 635nm≤1mW Automatic laser shutdown time: 30 seconds Automatic shutdown time: 180 seconds Data store: 20 groups Tape measure working ranges: 0-5m Minimum scale: 1mm Tape width: 19mm Ruler belt material: 65 manganese steel Working temperature: 0-40℃ Store temperature: -10℃ to 50℃ Package List: 1x 3 in 1 Digital Lasers Tape Measure