It combines 5m traditional tape measure and advanced 40m laser measure, also supports laser marking One-key distance measurement, with high-definition digital display screen, laser distance measurement error is only ±2mm Adopts environmentally friendly TPR rubber coating shell design, tough and wear-resistant, dust-proof design, long service life Coated manganese steel tape, showing two scales (inch scale, metric scale) Tape self-locking device: after pulling out the tape, the current measurement position is automatically locked. Press the unlock button, the tape automatically rebounds, which is safe and does not hurt your hands Up to 20 sets of data storage, easy to read The hook improves accuracy for measurement of inside and outside Ideal for measuring areas or objects including rooms, apartments, buildings, factories, garage, desks, chairs, sofa, closet, floor, etc With its compact size and lightweight design, it's convenient to carry Specification: Material: ABS + manganese steel tape Tape material: coated manganese steel tape Product model: 40m laser distance measurement + 5m tape + laser marking Scope of application: single measurement, continuous measurement, area measurement, volume measurement, hook measurement, decoration, furniture placement, door and window measurement, engineering surveying Battery type: 2*AAA alkaline batteries (not included) Size: 85*82*56mm Temperature range: 0℃-40℃ Measurement accuracy: 2mm Accuracy: 2mm Waterproof rate: IP54 Maximum storage capacity: 20 sets Tape parameters Range: 0-5m Minimum scale: 1mm Tape width: 19mm Unit: Metric and Imperial Strip material: 65 manganese steel