TecTecTec is one of the most popular golf rangefinders on the market, a top-tier brand that has an enviable reputation for accuracy and features. The TecTecTec SG-3840 is a compact model that measures your shots from a distance of 15 to 450 yards. The SG-3840 includes a high-resolution 2.5-inch screen, which displays distances up to 100 yards past the target line, with yardages down to 1 yard, as well as a built-in GPS system that can calculate your distances and yardages based on the time of day and your location. Its lightweight, sleek design is perfect for golfers who need to take their equipment to tournaments and don't want to be worried about that.