H/V MODE - The H/V button makes the laser level very easy to project lines seperately and together that you can choose whatever you want to work with vertical, horizontal or both laser lines simultaneously. CONVENIENT BATTERIES AND CHARGING FUNCTION: It comes with two rechargable Li-ion battery packs can last about 8 hours. And with USB charging function, this laser level can be used with direct power input even without the battery. Protected by TPR soft rubber on all sides makes the laser level enough wear resistant, shock resistant and impact resistant. The item "4D Green Beam Laser Level 360 Degree Cross Vertical Horizontal Lines 100 Feet" is in sale since Monday, August 10, 2020.This item is in the category "Home & Garden\Tools & Workshop Equipment\Measuring & Layout Tools\Laser Measuring Tools". The seller is "annvan2016" and is located in Memphis, Tennessee. This item can be shipped to United States.