Features: High accuracy and wide measuring range up to 100m. Quick measurement of distance, area and volume with one button operation. Automatic calculation of area and volume. Indirect measurement by Pythagorean theorem. Easy addition/subtraction of measurement. Easy targeting with bright laser pointer. Large LCD with backlight. Compact and handheld design, portable and convenient. Widely used in construction and industries, especially in large areas such as rooms, apartments, buildings, real estates, factories, warehouses, etc. Distance measurement precision: 2mm Measurement unit options: mm / in / ft Single/Continous measurement function: yes Outdoor target reflection board: no Area measurement function: yes Volume measurement function: yes Pythagorean proposition measurement function: full mode Add and subtract measurement function: yes Min/Max value: yes Data store/ recall function: yes Max storage: 100 units Data hold / Data clear function: yes Automatic backlight: yes Buttons/Keys sound: yes Laser level: II Laser type: 635nm, 1mW Automatically cut off laser: 20s Automatic shutdown: 150s Specifications: Model: CP-100P Storage temperature: -20-60C / -4-140F Working temperature: 0-40C / 32-104F Storage humidity: RH85% Battery: 1.5V 2xAAA alkaline batteries (Not included) Shell material: Plastic Color: Black&Orange Dimension: 110mm x 47mm x 26mm Net Weight: 160g Package includes: 1 x 100M Laser Distance Meter 1 x Portable pouch 1 x Hanging rope