On the basis of GS03, GS03MTL adds a slope switch, built-in magnet, and high-transparency lcd for a clearer view. In mode 2 (golf mode), the rangefinder would originally display the linear distance, slope compensation distance, and slope, but in order to legally use the rangefinder in tournaments, the gs03mtl can turn off the slope-compensated distance and slope, and only display linear distance. When you're not using the rangefinder, you can just attach it to the golf cart. Easily Measure with 3 Modes: Scan mode (m1) will display the linear distance. You can long press the power button to continuously read the distance within the scanning range, or short press to obtain the linear distance of the target. Golf mode (m2) will display the linear distance, slope compensation distance, and slope. Long press the power button to lock the flag (can lock flagpoles within 150 yards and unfolded flags within 250 yards). And the range finder will vibrate when it gets data. (meter/yard). In speed mode (m3) you can measure the speed of a moving object, 0-300 km/h.