The Quick Verdict
If you're choosing one or the other, the ULT-S Pro is the better single device — but the price gap makes this genuinely interesting. The ULT-G runs about $110. The ULT-S Pro is listed at $350 but selling on Amazon for around $150. At $150, these two are neck-and-neck in price, and the rangefinder wins on precision and battery life without asking you to charge anything. At $350, the math shifts — that's a lot for a device that does exactly one thing. Check the current Amazon price before you decide, because it matters here.
What They Actually Do
The ULT-G is a wrist-worn GPS watch: put it on, walk the course, and it shows you front/center/back distances to the green plus hazard yardages. The ULT-S Pro is a laser rangefinder: point it at a flag or a tree or a bunker lip, press a button, and it tells you exactly how far away that thing is. Both are tournament-legal — the ULT-G has no slope function at all, and the ULT-S Pro has a physical slope switch you flip off before competition.
The Real Tradeoffs
Precision vs. what you actually need to know
The ULT-S Pro is accurate to ±1 yard to whatever you point it at. That's genuinely impressive. The ULT-G gives you front/center/back to the green — call it ±3-5 yards to a fixed point. For most approach shots, both get you to the right club. Where the rangefinder earns its keep is on tucked pins: if the flag is 8 yards behind the front edge and you're hitting a 9-iron, that difference is real. The GPS watch just doesn't know where the pin is.
Speed of use
This is where the ULT-G wins, and it's not close. Your yardage is on your wrist before you even think to look. The ULT-S Pro lives in your pocket or a holster — you pull it out, raise it to your eye, find the flag through a 6x lens, press the button, read the number, put it away. On a quick-moving course or a busy weekend round, that routine adds up. Glancing at your wrist adds nothing to your pace of play.
Course layout vs. one number
Here's the category-level difference that no spec comparison captures: the ULT-G tells you things before you swing. Standing on a tee box you've never played, a 415-yard par 4 with a fairway that doglegs right — the watch shows you hazard distances, where the bunkers sit, how far to carry to a safe landing zone. The rangefinder can't help here. There's nothing to point at. You'd be guessing.
Flip it around: you're 165 yards out, the pin is tucked left behind a false front, and you need to know if you're looking at 158 or 171. The watch gives you a center number and zero pin information. The ULT-S Pro tells you exactly what you're looking at in about two seconds.
Battery and maintenance
The ULT-G runs about 2.5 rounds per charge and uses a proprietary USB clip. Remember to charge it the night before, or you're doing mental math on the back nine. The ULT-S Pro runs on a CR123 lithium battery that lasts for dozens of rounds — you might replace it once a season. If you've ever shown up to the first tee with a dead device, you know which type is more forgiving.
The same-brand question
Both are TecTecTec products. Both use the TecTecTec GPS app. That said, these two don't appear to share data or pair with each other — the app on the ULT-G side is primarily for course updates, not round data sync. So "same brand" here means they live in the same ecosystem in name, but don't seem to work as a connected pair the way some Garmin devices do. Don't buy both expecting them to talk to each other.
Cost of ownership
Neither has a subscription. The ULT-G is $110 with free course updates forever. The ULT-S Pro is around $150 on Amazon (verify before buying). No ongoing costs on either side. Over three years, both are genuinely affordable options.
Who Should Get Which
Get the ULT-G if: You want something on your wrist that handles yardages automatically, you play a variety of courses and want to see hazard distances before you commit to a shot, or you just want to stop guessing and don't want to fuss with a handheld device mid-round. It's also the right call if you're new to distance tech entirely — low friction, no skill required.
Get the ULT-S Pro if: You want the most accurate number possible to the flag and that's the main thing you care about. You play the same courses often enough that you already know the layouts, and what you're missing is pin-precise yardage on approach shots. Also: if you like single-purpose tools that don't need charging.
Get both if: You want the full picture and the combined cost is reasonable — at roughly $260 together (GPS + Amazon rangefinder price), this is actually a workable setup. The watch handles strategy and tee shots; the rangefinder handles approaches. That's how a lot of mid-handicappers quietly upgrade their course management without spending Garmin money.
The Bottom Line
At current Amazon pricing, the ULT-S Pro is the better single device for most golfers — it does its one job exceptionally well, never needs charging, and costs about the same as the watch. But if you've never used distance tech at all and want something effortless on your wrist, the ULT-G gets you there for $110 with zero complications.
ULT-G for the full-hole picture. ULT-S Pro for the exact number.