What They Have in Common
Both are AMOLED touchscreen watches with identical 1.2-inch, 390×390 displays. Both preload 43,000+ courses, offer the same free/subscription course update model, show full-color hole maps with hazard view, and run AutoShot detection built-in. Both get 15 hours in GPS mode and 10 days in watch mode. Both use the Garmin Golf app and carry a 1-year warranty.
Where They Differ
Weight, Design, and Who These Are For
The J1 weighs 29 grams. That's it. The S70 weighs 44 grams — still light for a GPS watch, but 50% heavier than the J1. That gap matters when you're designing a watch specifically so it doesn't affect a golf swing, which is exactly what Garmin did here. The J1 has a 43mm anodized aluminum bezel with an elastic fabric hook-and-loop band. The S70 has a ceramic bezel, Gorilla Glass 3, and 5 ATM water resistance. One is built to be forgotten on a small wrist; the other is built to last.
Features the S70 Has That the J1 Doesn't
This is a long list. The S70 has:
- Green contours (membership-required, but available)
- Virtual Caddie — AI club recommendations that factor in wind speed, elevation change, your swing history, and shot dispersion
- Plays-like distance with a built-in barometer for true elevation-adjusted yardages
- Live wind data on device
- Strokes gained analytics
- Heart rate monitor and sleep tracking
- Music storage (16GB)
- Garmin Pay contactless payments
- Smart notifications
- Slope mode
- Wi-Fi
- USB-C charging
- CT10/CT1 club tag compatibility
The J1 has none of those. You get GPS distances, AutoShot, scoring, hole maps, hazard view, and fitness profiles. That's the list.
Subscription Economics
Both use the same Garmin Golf membership: $9.99/month or $99.99/year. But the value proposition is completely different. On the S70, membership unlocks green contours, enhanced maps, and deeper analytics — features that materially change how you use the watch. On the J1, the free tier covers the core use case. A junior golfer doesn't need green contours to see front/center/back yardages and play a round. The subscription matters more on the S70 because the S70 has more features to unlock.
Three-year cost of ownership: J1 without membership is $300. S70 without membership is $650. If you add Garmin Golf membership to either, add $300 over three years. S70 with membership over three years: ~$950.
Charging and Glass
The J1 uses Garmin's proprietary charger. The S70 uses USB-C. In 2025, having to track down a proprietary cable is a minor but real annoyance. The J1's chemically strengthened glass is fine, but Gorilla Glass 3 on the S70 has a better track record for scratch and impact resistance in the field.
Who Should Buy Which
Get the Garmin Approach J1 if:
- You're buying this for a junior golfer — that 29g weight and $300 price point are exactly what this was designed for
- You want the lightest possible GPS watch and genuinely don't care about heart rate, music, or smartwatch features
- You want a clean, distraction-free course tool and will never need Virtual Caddie or strokes gained
- Budget is the constraint and AMOLED display quality matters more to you than feature depth
Get the Garmin Approach S70 (42mm) if:
- You want a GPS watch that doubles as a smartwatch — notifications, music, contactless payments
- Virtual Caddie is on your list: wind-adjusted, elevation-adjusted AI club recommendations are genuinely useful, not just marketing
- You want strokes gained data to track improvement over time
- USB-C charging matters (it should, by now)
- You want the option to add green contours via membership later
- You're buying for an adult golfer who will wear this off the course too
The Bottom Line
The J1 is a purpose-built tool for junior golfers, and within that context it's excellent — AMOLED display, 29 grams, 43,000 courses, free at $300. There's nothing else quite like it. But if you're not a junior golfer, the S70 is the clearer choice by a wide margin. The feature gap — Virtual Caddie, wind data, green contours, strokes gained, music, heart rate, GPS-C — isn't incremental. It's a fundamentally different device. The 42mm version keeps the weight at 44g and the display at the same 1.2 inches as the J1, so the size penalty is modest. The price gap is real, but so is everything you're getting for it.
Get the Garmin Approach S70 (42mm).