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. The Slope Switch enables the golfer to see slope-compensated distances on the display. It can be toggled on or off to comply with USGA regulations. The Red/Black Control button allows you to manually change the display color to your preferred setting based on the environment (high/low light).