What They Have in Common
Quite a bit, actually. Both run SkyCaddie's TruePoint GPS engine, both pull from the same 35,000-course database, both include IntelliGreen Pro contours on select courses, both have Dynamic HoleVue with auto-reorienting hole maps, both are SuperTag Ready for GameTraX 360 tracking, both require a Double Eagle membership, and both last up to 18 hours on a charge. These aren't siblings — they're practically twins.
Where They Differ
Screen Size: The Only Real Variable
The Pro 5X has a 5.5-inch LCD. That's smartphone-sized — closer to an iPhone Plus than what most people picture when they think of a GPS handheld. The Pro 4X drops to 4 inches, which is still a color touchscreen with the same HD graphics, just less of it.
What does that mean on the course? When you're looking at a Dynamic HoleVue map with up to 40 geo-referenced targets, more screen makes a difference. Hazard placement, layup markers, approach angles — all of it is easier to parse when you're not squinting at a compressed image. The Pro 5X wins this by the basic math of physical size.
That said, 5.5 inches is large to carry around. The Pro 5X weighs 236 grams (8 oz) and measures about 6.1 × 3.0 inches. That's meaningful pocket real estate, especially if you're walking and want something compact. SkyCaddie describes the Pro 4X as slimmer and lighter than the 5X — exact weight isn't published, but if pocket comfort matters to you, probably in the neighborhood of 150-180g, I'd guess.
Price and Membership Math
At current pricing, the Pro 4X is $299.95 (on sale from $349.95) and the Pro 5X is $399.95. That's a $100 gap right now, though the standard gap at full price is $50.
Both require a Double Eagle membership — neither device is useful without it, because that's what unlocks course updates and keeps your database current. Bundled pricing runs $299.95 (Pro 4X, 1-year) or $399.95 (Pro 5X, 1-year). Three-year bundles are $379.95 and $479.95 respectively. Over three years, the total cost of ownership difference is exactly $100 — the device price delta, since the membership is the same. That's worth naming: you're paying $100 for 1.5 more inches of screen. Whether that's worth it is a personal call.
Dual-Frequency GPS
One spec that's easy to overlook: the Pro 4X specifies dual-frequency GNSS in its positioning tech. The Pro 5X lists "multi-constellation" satellite systems through TruePoint, but dual-frequency isn't mentioned explicitly. In practice, both claim the same TruePoint precision positioning that SkyCaddie says doubles error correction versus typical GPS. Whether the dual-frequency implementation on the 4X translates to meaningfully better accuracy in the real world — I genuinely don't know, and I wouldn't trust a spec sheet to answer that. But it's there on the 4X and not mentioned on the 5X, which is worth flagging.
Who Should Buy Which
Buy the SkyCaddie Pro 4X if:
- You walk a lot and want the most compact SkyCaddie handheld available
- You're currently on the Pro 4X fence because of price — $299.95 on sale is a good entry into the SkyCaddie ecosystem
- Pocket-friendly form factor matters more than screen size for reading maps
- You want dual-frequency GNSS and that spec matters to you
Buy the SkyCaddie Pro 5X if:
- You want the biggest, easiest-to-read display on a dedicated golf handheld
- You spend a lot of time reading green contours and hole maps and want more screen to work with
- You're primarily a cart golfer and portability is less of a concern
- You've already played with a 5-inch-plus device and don't want to downgrade
The Bottom Line
Buying the Pro 5X over the Pro 4X is a $100 bet on whether a bigger screen matters to your game. If you read hole maps and green contours carefully — tracking layup windows, pinpointing bunker carries, parsing a two-tiered green — the extra screen makes that easier. If you mostly want front/center/back yardages and a reliable GPS unit that fits in a back pocket, the Pro 4X does everything the 5X does for less money and in a smaller package.
There's no feature you lose by choosing the 4X. That's not usually how these comparisons work, but here it just is what it is.
Get the Pro 4X.
See Also