Handheld Laser Measure Tool Mini Infrared Measuring Instrument for Area Window Height Sofa Size SW24A 0.05-40m Item Type: Portable Laser Measurer Material: Plastic, Electronic Components Weight: Approx. 108g / 3.8oz Battery (Shipped with Built In Battery) : Lithium Battery 3.7V 370mah Applicable Scope: Indoor Environment Function: Single Measurement, Continuous Measurement, Area Measurement, Circumference Measurement, Volume Measurement, Wall Area Measurement Product Size: Approx. 80x37x20mm / 3.1x1.5x0.8in Laser Grade: II Laser Type: 630 to 670nm, <1mw Automatic Cutting Laser: 20 Seconds (Single Measurement) Automatic Shutdown: 150 Seconds Charging Specification: DC 5V 0.35A Full Charge Measurement Times: 8000 Times Storage Temperature Range: -20 Degrees Celsius to 60 Degrees Celsius Operating Temperature Range: 0 Degrees Celsius to 40 Degrees Celsius Storage Humidity: 20% to 80%RH