Devices vary widely in terms of features – from the bare minimum of displaying distances to the front, middle and back of the green, to pretty amazing stuff like aerial fly-over maps of each hole, digital scorecards with sophisticated analysis of your statistics, and the ability to calculate who owes whom and how much across multiple betting games at the same time.
To provide a quick overview, Table 1 highlights features of the various GPS devices.

Below are just some of the basic features of each device. In addition to these are the aerial maps and video flyovers featured in the uPro, and the more advanced statistic tracking offered by the Golf Guru Color Guru (along with more detailed shot tracking) and the Sonocaddie V300.

Table 1. Golf GPS Device Features

Golf GPS Device Screen Type Green Rotates Green Points Mapped Choose
Green
Point
Choose
Course
Point
Track
Shot
Distance
Scorecard Statistics Waterproof?
Bushnell Hybrid Laser GPS B/W N/A FCB No No Yes No No Resistant
Bushnell NEO XS Watch B/W N/A FCB No No Yes No No Proof
Expresso WR62 B&W N/A FCB No No Yes No No Proof
Garmin Approach G8 Color Yes NCF Yes Yes Yes Yes Yes Proof
Garmin Approach G7 Color Yes NCF Yes Yes Yes Yes Yes Proof
Garmin Approach G6 Color Yes NCF Yes Yes Yes Yes Yes Proof
Garmin Approach S4 Watch B/W No NCF Yes No Yes Yes Yes Proof
Garmin Approach S3 Watch B/W No NCF Yes No Yes Yes No Proof
Garmin Approach S2 Watch B/W N/A NCF No No Yes Yes No Proof
Garmin Approach S1 Watch B/W N/A NCF No No Yes No No Proof
GolfBuddy PT4 Color No NCF Yes Yes Yes Yes Yes Resistant
IZZO SWAMI 4000 B/W N/A FCB No No No No No Resistant
Matrix SHOTMATE Voice N/A N/A C No No Yes No No No
SkyCaddie Aire B/W TBD TBD TBD TBD TBD TBD TBD TBD
SkyCaddie Breeze Color Yes NCF Yes Yes Yes Yes Yes Resistant
SkyCaddie Gimme Color TBD TBD TBD TBD TBD TBD TBD TBD
SkyCaddie SGX Color Yes NCF Yes Yes Yes Yes Yes Resistant
SkyCaddie SGXw Color Yes NCF Yes Yes Yes Yes Yes Resistant
SkyCaddie Voice N/A TBD TBD No No TBD TBD TBD TBD
SkyCaddie LINX Watch B/W Yes Yes Yes No TBD No No TBD
Sonocaddie V500 Color No FCB No* Yes Yes Yes Yes Proof

*Additional notes:
Sonoacddie V500. While the Sonocaddie V500 does allow the user to select any point on the course to receive distances, it lacks the ability to zoom in on any part of a hole and any green detail. Without either of these capabilities, it makes it essentially impossible to select a specific target location on the green.