The Callaway Micro Rangefinder delivers the benefi ts of both Laser and Prism technology within one ultra compact, lightweight device. For courses that have flag sticks with built-in reflectors, Prism mode is ideal for quickly acquiring the distance to the pin with minimal effort and a high degree of accuracy. To acquire distances to other objects. Laser mode allows you to scan the landscape for distances to hazards, trees, front of the green, etc. When playing a course without flag stick reflectors, simply stay in Laser mode throughout the round and engage P.A.T (Pin Acquisition Technology) to lock onto the flag quickly and accurately.