Quantity: 1 piece (screwdriver + steel ruler to send 13 batteries) Material: ABS engineering plastic. Color: Black Size of product: 244X26X58mm Weight: approximately 196g Power supply: AG13 battery - 3 pieces Laser wavelength: 630 nm-680 nm Laser range: 15 meters Versatile level: 3-in-1 spirit level, laser level and measuring tool to help provide the most accurate measurements for home improvement projects, hanging pictures/wallpapers, installing shelves, laying floors, etc. Precise: The small level bubble window provides three sides from which to check that everything is consistent. Horizontal, vertical and angled bubbles allow precise measurements at horizontal, vertical or 45 degree tilts. Bubble with LED lights: Horizontal vertical and horizontal bi-directional bubbles with LED lights. Can be used in the dark without any other light. Lightweight and strong: Made of durable ABS and lightweight aluminum alloy, with high hardness, not easy to deform and durable. p> Good quality product