Features: - Laser level was widely used in construction, interior, and it has a function which can cast several laser lines to fix working lines as auto level and theodolite but more convenient. - It sends laser lines to a place accurately, makes work progress more convenient, more time-saving , more labor-saving and assure of construction quality with higher precise. - Laser level was widely used in construction units, such as carpentry, bricking-up, paint-working , electrician and it can be used in cutting and excavation. - You can choose vertical line(4 vertical lines can make a cross above), horizontal line or let them work at the same time by pressing V/H buttons which located on control-pad. - Please do not look straight at the laser beam, it will be better if you take protect goggle on. Specifications: Product Name: Pocket Size Rechargeable Laser Level Green Red Horizontal Vertical Cross Line Mini Portable Laser Level. Material: PC. Color: Black. Laser Wavelength: 650nm (Red) 520nm (Green). Size: 39x38.8x36mm. Power Supply: 5VDC/50mA. Laser Class:class 2. Laser Range:Up to 3m. Leveing accuracy:Max +/-4.5mm / 3m. Lithium Battery: 230mah / 3.7V (replaceable). Laser Lines: vertical and horizontal (cross). Package Included: 1x Infrared laser level. 1x USB Line. 1x Instructions