VC4 Voice Golf GPS Providing accurate carry distance – VC4. VC4 is a smart GPS rangefinder that tells not just the distance to the middle of the green, but also provides elevation changes, distance to front and back, locates the landing point of the ball and gives you the carry distance.  Voice output of distance Active green info Auto Slopeâ„¢ Automatic course / hole recognition Over 40,000 courses from around the world pre-loaded Distance to front / center / back of the green Simple and easy to use Â