The folks at Callaway just announced the Upro mx, a followup to the device they so humbly referred to as the "iPhone of golf GPS technology." PNDs for golfers aren't exactly rare, but the new Upro claims to be the only one packing "hi-resolution actual aerial photography" of 25,000 different courses. It also boasts a multi-gesture touchscreen and optical finger navigation, as well a slew of viewing modes: Virtual Green offers exact putting distances, Smart View displays the best angle for each shot, and ProMode features video flyovers. Who knows, if they could land a Bill Murray tie-in we might actually be enticed to pick up a club and ... Oh, who are we kidding? The Upro mx hits stores in May at $199, and you can check out a video of the device in action after the jump -- that is, if you swing that way.