Features: 1Versatile Design: This three in one laser tape measure combines a ruler, laser rangefinder, and infrared measurement tool, allowing for a wide range of measurement needs in one device. 2Bluetooth Connectivity: The laser tape measure supports for Bluetooth connection with smartphones or other devices enables easy data transfer and measurement applications. 3High Accuracy Measurements: With a laser range of 20 to 40 meters and a tape measure of 5 meters, this laser tape measure provides accurate measurement results. 4Auto Shut Off Function: Equipped with automatic shutdown, laser auto off, and backlight auto off functions, this tape measure is energy efficient and environmentally friendly. 5Convenient and User Friendly: Enjoy features such as unit switching, front and rear benchmarks, and storage of historical records, catering to different user measurement habits. Specification: Item Type: Laser Tape MeasureMaterial: ABSWeight: Approx. 392.00g/13.83ozMeasurement Range: 20 to 40mMeasurement Unit: m, ft, inMeasurement Baseline: Front or back referenceLaser Grade: Class 2Laser Type: 630 to 670nmHistorical Records: 20 setsAuto Off: 180sAuto Laser Off: 30sAuto Backlight Off: 10sMaximum Power: <1WBattery Type: Lithium battery, 380mAh (built in battery included)Tape Measure Length: 5m Package List: 1 xLaser Tape Measure1 x User Manual1 x USB Cable