40M Smart Handheld Rangefinder Digital Mini Distance Measuring Meter Portable USB Charging Electronic Space Measurement Device for Area Volume Distances This portable la-ser range finder with palm size, widely used in interior decoration, indoor design, construction field. It can measure distance, area and volume accurately, quickly and conveniently with a wide range of 40M and accuracy up to ±8mm. Features: Multifunctional, measures distance, area and volume accurately, quickly and conveniently. Wide measuring range 40M with a high accuracy up to ±8mm, accurate and efficient.  20 data memories, allows to check the most recent measurement freely. Switchable among meter (m), inch (in), feet (ft), convenient to read the measuring results. Reinforced surface is dustproof and IP54 waterproof, can be used in the outdoor environment. Large LCD with backlight, help to see the date clearly in low-light conditions. Handheld design makes it portable and lightweight to take for measuring. Widely used in interior decoration, indoor design, construction field. Specifications: Color: black  Measuring Range: 0.05-30m (0.16-98ft) Material: ABS Measuring Time: 0.1-3s Display: LCD with Backlight Accuracy: ±8mm Measurement Unit: m / in / ft La-ser Class: Class II La-ser Wavelength: 635nm La-ser Output: <1mW Water-proof and dust-proof grade: IP54 La-ser Auto Off: 30s Power Auto Off: 480s Measurement Reference Switch: Yes Power: rechargeable lithium battery(200mAh) Operation Temperature: 0~40℃ / 32~104℉ Storage Temperature: -20~60℃ / -4~140℉ Item Size: 100 * 32 * 12mm / 3.94 * 1.26 * 0.47in (L * W * H) Package Size: 135 * 70 * 35mm / 5.31 * 2.76 * 1.38in (L * W * H) Item Weight: 30g / 1.06oz Package Weight: 102g / 3.60oz Note: 1. The actual color of the project may differ slightly from the color shown in the image due to the difference in display and lighting effects. 2. Due to manual measurements, allow measurement deviations of 0.5-1". Package List: 1 * Distance Meter 1 * USB Cable 1 * User Manual(Chinese + English)