Huepar Digital 2-in-1 Laser Tape Measure can be widely use in house decoration, building construction, real estate, etc.Huepar DT30 Laser Distance Measure Tape Specifications:* Laser Cla: Cla 2, output power <1mW* Laser Wavelength: 630~670nm* Measuring Range: Laser Measure: 0.65~197Ft. Tape Measure: 16Ft.* Measuring Accuracy: 1/16 inch(2mm)* Power Source: Built-in 380mAh Li-ion Battery* Battery Life: 3600 times for single measurement* Charging Port: TYPE-C Charging* Max Storage: 50 groups* Measuring Units: m/ft/in/ * Special Features: 2-in-1 Laser tape measurement tool* Automatically Cut Off Laser: 30s* Automatically Shutdown: 180s* Automatically Turn Off the Backlit: 10s* Dimension: 3.54x2.23x2.91inch(90x56.8x74mm) Backlit LCD* Backlit LCD improves better readability in low-light conditions.* And bright digital screen is large and easy to read for laser read outs.* Whether you are working in low or bright light conditions, reduce eye strain during repeated use. Switchable Measuring References* Two measuring reference points (the front and the rear) meet different measuring needs.* Long pre the unit button to change the reference point. Movable Hook* Movable hook improves accuracy for measurement of inside and outside. 2-in-1 Laser Tape Measure* This laser tape measure combines a 197Ft (60 m) laser measure with a 16Ft (5 m) tape measure, which is a fully functional measurement tool.* Users can use the common tape measure for the application scene, or you can measure the longer and inconvenient distance by laser range finder. Tape with Wide Blade* The width of the ruler tape is 0.75in/19mm. Brake Lock* The brake lock helps control the tape recycling speed for safe measuring.* Pre the brake lock, the tape will recycle slowly