Features BRIGHT AND CLEAR: The laser leveling tool features a clear, bright and refined green laser beam that is easy to view even in bright environments, making it perfect for indoor and outdoor use. AUTO LEVELING: Built in reliable laser leveling system, the level tool automatically determines the correct level, ensuring high accuracy in all your projects. VERSATILE LASER LINE: The level tool allows you to quickly switch between vertical and horizontal lines, or even display both lines simultaneously, perfect for a range of applications. STURDY SHELL: Built with a sturdy encapsulated body, resistant to scratch, wear, debris and water, the line level tool is designed to withstand even the most demanding work environments. PROFESSIONAL TOOL: Designed specifically for professionals, the laser line level tool delivers high performance laser leveling and alignment, allowing you to achieve the perfect finish on all your projects. Specification: Item Type: Laser Leveling Tool Material: ABS Model: LV1 Battery: 1.5V AA Battery x 2 (Not Included) Basic Parameter: Wavelength: 635nm Power: <1mW Accuracy: ±2.5mm/5m Line Width: ±2.5mm/5m Automatic Leveling Range: 3° Working Distance: Approx. 15m/590.6in (Indoors) Package List:1 x Laser Leveling Tool2 x Accessories1 x User Manual1 x Storage Bag Package List 1 x Laser Leveling Tool 2 x Accessories 1 x User Manual 1 x Storage Bag