The Series 3 Max+ Laser Rangefinder is the next iteration of our flagship, best selling S3 line of lasers. S3 Max+ offers improved software + electronics, an enhanced ergonomic design, and is powered by our new rechargeable battery technology. Slope Switch: A prominent and easy-to-use switch allows you to toggle the slope function on and off. This feature provides a compensated distance that accounts for elevation changes, and turning it off makes the device tournament-legal. Red/Black Dual-Color Display: You can manually switch the display color between red and black, which is helpful for optimizing visibility in various lighting conditions (e.g., cloudy days vs. bright sunlight).