The Quick Verdict
Honestly? These two together is the setup. The S70 on your wrist for course strategy and the Z82 in your bag for pin-precise yardage. They're both Garmin, both pull from the same massive course database, and they're designed to complement each other rather than compete. Combined you're looking at $1,300 — not nothing — but for a serious golfer, this is exactly how the pros approach distance tech. If you're buying just one, the S70 gives you more information across a full round.
What They Actually Do
The S70 is a full-featured GPS smartwatch that shows you the entire hole on your wrist before you ever pull a club. The Z82 is a laser rangefinder that measures exact distance to whatever you point it at — flag, tree, bunker face, doesn't matter. Both are legal in tournament play with slope disabled, both preload tens of thousands of courses, and both live inside the Garmin Golf ecosystem.
The Real Tradeoffs
Precision vs. What You Actually Need
The Z82 is accurate to within 10 inches at the pin. The S70 gives you front, center, and back of green — typically within a few yards. For most approach shots, that spread is what you need: "front is 147, back is 163, pin looks middle-back, I'm hitting 157." The rangefinder wins when pin placement is everything — a tucked Sunday flag on a 6,500-rpm green, for instance. The watch wins for every other number you need during the round.
Speed When It Counts
You're on the tee, group behind you is waiting, it's a 415-yard par 4 with a fairway bunker at 230 and water right. You glance at your wrist. Done. You know where to miss, what to carry, and you can pull the club in five seconds.
Now you're 147 yards out, pin is back-right on a green sloping toward you. You pull out the Z82, find the flag, get 151 to the pin. That extra specificity is worth the extra six seconds here. On a tucked pin where you're debating between a hard 8 and a soft 7, that number matters.
The watch wins on pace-of-play. The rangefinder wins when you need the exact number.
What the Watch Can Do That a Rangefinder Never Will
Course layout. Hazard distances. Hole shape. The S70 shows you the full-color hole map before you've even teed it up. That dog-leg you've never played — the watch tells you the carry over the trees is 215 and the fairway opens at 240. The Z82 can't help you there; there's nothing to point at.
Add in the virtual caddie (club recommendations based on wind, elevation, your swing history, and shot dispersion), the built-in barometer for plays-like distance, and automatic shot tracking — this watch is doing 15 jobs while the rangefinder does one.
What the Rangefinder Does That the Watch Never Will
Give you the exact distance to the branch hanging over the fairway at 228 yards. Or the front lip of a bunker you're trying to carry. Or the back of a green when you're thinking about going flag-hunting. The Z82 also has something genuinely cool: full-color 2D course maps in the viewfinder itself, so you're seeing GPS overlay while you range. That's a Z82-specific feature — not something the watch replicates.
The Ecosystem Angle
Both are Garmin. Both sync to Garmin Golf. The S70 covers 43,000 courses; the Z82 covers 41,000. That's not a meaningful difference — you're not playing the 2,001st course in the database. What matters is the shared app: your rounds, stats, and shot history all live in one place whether you used the watch, the rangefinder, or both.
Cost Over Time
The S70 is $699.99. The Z82 is $599.99. But the S70's best features — green contours, enhanced maps, touch targeting — sit behind a Garmin Golf membership at $99.99/year. If you skip it, you're still getting solid GPS; if you pay it, you're in $800 territory after year one. The Z82 has no ongoing cost after purchase. Its rechargeable battery runs up to 15 hours in GPS mode and charges via USB — no CR2 batteries to think about.
Tournament Legal
Both have tournament modes. The Z82 has a verified slope-disable (look for the red ring). The S70 has tournament mode that disables slope-compensated distances. You're covered at the club championship with either device.
Who Should Get Which
Get the S70 if you play different courses regularly, want shot tracking and strokes-gained data without carrying extra gear, or you want a daily-wear watch that doubles as a full golf computer. Also a strong pick if you're newer to reading course layouts — the hole maps do a lot of the thinking for you.
Get the Z82 if you already know your courses well, you want dead-accurate pin distance on demand, and you prefer single-purpose tools that don't need charging after every round. It's also the right call if you already wear a watch you like and don't want to replace it.
Get both if you're a serious golfer who wants the full picture — strategy from the watch, precision from the rangefinder. This is what a lot of scratch-to-5 handicappers actually use, and these two Garmin products are purpose-built to coexist in the same bag.
The Bottom Line
The S70 and Z82 don't really fight each other — they solve different parts of the same problem. The watch handles everything before the shot: where to aim, what to avoid, how the hole sets up. The rangefinder handles the last step: exactly how far to the flag. Used together, there's almost no distance question a round can throw at you that you can't answer.
But if you're buying just one? The S70 gives you more information across a full round — course layout, shot tracking, wind data, virtual caddie, and reasonable pin distance all from your wrist. The Z82 does its one job better, but the S70 does many more jobs well.
Get both. The S70 on your wrist, the Z82 in your pocket.