The Quick Verdict
Honestly? These two together is the setup — the S70 on your wrist for course strategy, the Z82 in your pocket for when you need the exact number. They're both Garmin, they share the same ecosystem, and they're built to complement each other. Combined you're looking at $1,250, which isn't nothing, but it's also the kind of pairing that serious golfers actually use.
Buying just one? Take the S70. It does more of the job across a full round — hole maps, hazard yardages, wind data, shot tracking, club recommendations — whereas the Z82 does one thing brilliantly but leaves you flying blind on everything else.
What They Actually Do
The S70 is a smartwatch with a full-color AMOLED display that shows you preloaded course maps, hazard distances, and AI club suggestions from your wrist. The Z82 is a laser rangefinder with built-in GPS that you point at a target and it tells you the exact distance — within 10 inches. Both are tournament-legal (with slope disabled), both are Garmin products that live in the same app ecosystem, and both are unambiguously tier-1 devices.
The Real Tradeoffs
Precision vs. enough-precision
The Z82 is accurate to within 10 inches at the pin. The S70 gives you front/center/back of the green to within a few yards. For most golfers on most shots, front/center/back is completely sufficient — you pick your club, you aim, you swing. But when the pin is cut tight behind a front bunker and you need to know if it's 147 or 153, only the Z82 can settle that.
What you see before you pull the club
This is where the S70 has a category-level advantage the Z82 simply can't match. You're standing on a tee box you've never seen — 415-yard par 4, water all down the right, fairway bending left after a hill. The S70 shows you the hole map, the carry distance to clear the water (say, 205 yards), where the fairway widens, and how far the layup leaves you. The Z82 can't help here. There's nothing to point it at that answers those questions.
Flip it: you're 165 yards out, pins tucked back-left on a two-tiered green, and you know the difference between 161 and 168 matters for whether you take an extra club. The Z82 gives you that number. The S70 doesn't.
Speed of use
Glancing at your wrist takes under a second. Pulling the Z82 out, finding the flag in the viewfinder, locking the laser, reading the number, and putting it back takes 15-20 seconds. On a busy weekend round with a group behind you, that adds up. For tee shots, layups, and hazard checks, the watch is faster in every situation.
The ecosystem advantage
This is what makes the same-brand pairing genuinely useful rather than just conveniently branded. Both devices connect to the Garmin Golf app. Your shot history from the S70 feeds into the virtual caddie's club recommendations. The Z82 includes GPS course maps in its viewfinder — so you're getting both laser precision and a visual of the hole layout through the same optic. They're designed to coexist, not to compete.
Cost of ownership
S70 is $649.99. The Z82 is $599.99. Neither requires a mandatory subscription — though the S70's green contours are locked behind Garmin Golf's $99.99/yr membership. Both have rechargeable batteries (the Z82 gets up to 15 hours in GPS mode, the S70 gets 15 hours in full GPS mode). No surprise costs on either side beyond that optional membership.
Tournament legality
Both work in competition. The S70 has a dedicated tournament mode. The Z82 has a verified slope disable confirmed by tournament-mode indicator light. Slope on, both are off limits in stroke play — slope off, both are legal.
Who Should Get Which
You want the S70 if: You play different courses regularly and want to actually learn them as you go, you want shot tracking and scoring without pulling out your phone, or you want one device that works for golf and also handles your daily fitness, music, and notifications. It's genuinely useful in 15 different ways across a round.
You want the Z82 if: You play the same few courses and already know the layouts cold, you care most about the exact pin distance on approach shots, or you want something that does one thing with no fuss and no charging ritual. It's also the better tool if you already have a GPS device and just want to layer in laser precision.
Get both if: You're breaking 80 regularly and course management is actually part of how you think about playing. Low-handicap golfers use both in a round — the watch for the strategic view, the rangefinder for the specific number. At $1,250 combined it's a real investment, but it's the complete picture.
The Bottom Line
These are complementary tools, not a straight either-or. If you can swing both, the S70 and Z82 together is genuinely the best Garmin golf setup you can put together. But if you're buying one device, the S70 is the answer — it covers more of the decision-making you do in a round, from first tee to last green.
Get both. The S70 on your wrist, the Z82 in your pocket.