Feature: High Precision with 4D 16-Line Positioning: Equipped with a 4D 16-line positioning system for precise and detailed work, ideal for both horizontal and vertical alignments in interior construction. Automatic Self-Leveling System: Features an advanced self-leveling mechanism that ensures accurate readings within ±3°, making it easy to use even for beginners. Versatile Use with Adjustable Extension Pole: Comes with an adjustable extension pole with three height settings compatible with most 5/8" laser level interfaces, enhancing its versatility across various applications such as tiling, paneling, wallpaper hanging, and stud framing. Compact and Portable Design: The compact design, coupled with a carrying case, makes this laser level easy to transport and store, perfect for professionals or DIY enthusiasts working in multiple locations. Laser Diodes and Precise Mirror: Utilizes laser diodes alongside high-precision conical mirrors to produce clear, bright, and accurate laser lines, with adjustable brightness for optimal visibility under different lighting conditions. Self-Calibration and Safety Alerts: Incorporates a self-check calibration function. If the unit is placed at an angle greater than 3°, the laser will flash continuously, and the device will emit a warning beep, prompting the user to reset the instrument on a flat surface, ensuring safety and accuracy in every project. Specification: Horizontal Accuracy: ±1.5mm/7m Vertical Accuracy: ±2mm/7m Lower Point Accuracy: ±1.5mm/1.4m Orthogonal Accuracy: 90°±60" Zenith Accuracy: ±1mm/5m Emission Angle: Vertical 360° Vertical Line Emission Angle: 360° Horizontal Line Emission Angle: 360° Automatic Leveling Range: about ±2.5° Wavelength: 532nm (Green) Laser Emission Level: Safety Standard Level 2 Working Temperature: -10° to +50℃ Battery: 2400mAH x 2 Working Distance: 25 meters Package List: Level Batteries Charger Tripod Lifting Platform Iron Plate Wall Mount Remote Control Instruction Manual Plastic Box 1.0m Tripod Glasses Tripod Interface Window Clip