The Quick Verdict
Get the Approach S70. At $700 vs $1,000, you're getting identical golf features — same Virtual Caddie, same AutoShot, same green contours (membership required for both), same 43,000 courses, same AMOLED display size. The Fenix 8 costs $300 more and adds 27 extra hours of GPS battery life, 10 ATM water resistance instead of 5, and a broader multisport profile. If you're primarily a golfer who occasionally works out, the S70 is the smarter buy. The Fenix 8 makes sense only if you're logging serious miles in the pool or on a trail between rounds. Check price at Amazon →
What They Have in Common
Same 1.4-inch AMOLED touchscreen. Same 43,000 preloaded courses. Same Virtual Caddie with wind, elevation, and swing history. Same AutoShot detection. Same green contours behind a $99.99/yr Garmin Golf membership. Same PlaysLike calculation with barometric pressure. USB-C charging. Strokes gained. Slope mode. Music storage. Contactless payments. These two share more DNA than most competing watches from different brands.
Where They Differ
Battery Life
This is the real gap. The S70 does 20 hours in GPS mode — enough for one round with room to spare, or a long day if you're playing 36. The Fenix 8 does 47 hours in GPS-only mode. That's two back-to-back days of golf, a 36-hole tournament without a charger hunt, or a weekend trip where you forgot to plug in Thursday night and it doesn't matter.
For most golfers playing one round every few days, 20 hours is fine. You charge it after the round and it's ready. But if you travel for golf — links trips, resort stays, days where the charger is buried in a bag — the Fenix 8's battery is a genuine difference-maker, not just a spec number.
Weight and Build
The S70 is 56 grams. The Fenix 8 (stainless steel) is 80 grams — that's 43% heavier on your wrist. You'll notice it. Not during the round necessarily, but on the drive home and through the back nine when you start paying attention to how your wrists feel. The titanium Fenix 8 variant is lighter (73g with band), but that'll push the price even further past $1,000.
The Fenix 8 also hits 10 ATM water resistance versus the S70's 5 ATM. Both are fine for rain and sweat. 10 ATM gets you into open-water swimming; 5 ATM does not. If you're a triathlete who golfs, that matters. If you're a golfer who occasionally swims laps, it probably doesn't change anything.
Multisport vs Golf Focus
The Fenix 8 runs on Garmin Connect — the full multisport ecosystem — in addition to Garmin Golf. It has activity profiles for running, hiking, cycling, swimming, skiing, and more. The S70 does fitness tracking and heart rate, but it's clearly designed with golf as the primary use case.
Neither is better. They're different tools. The S70 is a golf watch that tracks your steps. The Fenix 8 is a multisport watch that also plays excellent golf. If you're training for something — a half marathon, a triathlon, anything involving structured workouts — the Fenix 8's Connect integration is legitimately useful. If your workouts are casual, the S70's fitness features are enough.
The $300 Gap
Both watches require a $99.99/yr Garmin Golf membership to unlock green contours and enhanced maps. So over three years, you're paying: S70 at $700 + $300 in membership = $1,000. Fenix 8 at $1,000 + $300 in membership = $1,300. The Fenix 8 costs $300 more upfront, and that gap doesn't close.
Who Should Buy Which
Get the Approach S70 if:
- Golf is your main sport and fitness tracking is a nice-to-have
- You charge your watch regularly and 20 GPS hours is plenty
- You want flagship Garmin golf features without paying for multisport extras you won't use
- The 56g weight sounds more comfortable for all-day wear
- $300 in savings matters — it's a full Garmin Golf membership for three years
Get the Fenix 8 if:
- You're active across multiple sports and want one watch that handles all of them seriously
- You travel for golf and don't want to think about charging mid-trip
- You run, hike, swim, or cycle with enough intensity that proper activity profiles are useful
- You play 36-hole days or multi-round tournaments and want battery confidence
- Weight and build quality matter — and you're considering the titanium variant anyway
The Bottom Line
These two watches play identical golf. Same courses, same AI caddie, same shot tracking, same green view. The Fenix 8 wins on battery and durability; the S70 wins on price and weight. For a golfer who just wants the best Garmin golf experience, spending an extra $300 to get battery life you'll rarely need and activity profiles for sports you don't do is hard to justify. If you're cross-training seriously, the math flips — the Fenix 8 becomes a single device that replaces two.