What They Have in Common
Both are AMOLED touchscreens with identical 1.2-inch, 390x390 displays. Both pull from Garmin's 43,000-course database with free basic distances. Both use AutoShot detection, run 15 hours in GPS mode, hold 10 days in watch mode, and live in Garmin Golf. Tournament mode on both. Same battery, same screen, same platform.
Where They Differ
The $350 Gap Explained
The J1 strips the Garmin Golf platform down to essentials — GPS distances, green view (flat, no contours), hazard view, AutoShot, and scoring. That's it. No heart rate. No sleep tracking. No notifications. No music. No payments. No strokes gained. No wind. No virtual caddie.
The S70 adds all of that. Wind data on-device. A barometer that calculates plays-like distances factoring elevation. Virtual Caddie with club recommendations built on your swing history, shot dispersion, and current wind. Strokes gained. Heart rate. Sleep tracking. 16GB music storage. Garmin Pay. Smart notifications. Wifi. A ceramic bezel instead of anodized aluminum.
If you're keeping score, the J1 is a GPS watch. The S70 is a golf computer you also sleep in.
Green Contours and What They Cost
Neither includes green contours at the base price — that requires a Garmin Golf membership at $99.99/yr for both. On the J1, the membership unlocks enhanced course data and contours, but the watch has no Virtual Caddie or wind features to unlock, so the membership does less for you. On the S70, the same $99.99/yr also activates Virtual Caddie's full feature set.
If you buy the J1 and add the membership, you're at $400 year one and $100/yr after that. The S70 with membership is $750 year one and $100/yr after. Over three years: J1 totals ~$600; S70 totals ~$950. Real money, real difference.
Weight and Who That Actually Matters For
The J1 weighs 29 grams. The S70 42mm weighs 44 grams. That's not a marketing footnote — it's why the J1 exists. Garmin built it specifically for junior golfers whose instructors get twitchy about anything on the wrist during a swing. At 29g with an elastic hook-and-loop band, most kids won't even feel it. For adult golfers, 44g is still on the lighter end of golf watches, so the weight difference is probably a non-factor unless you're buying this for a 12-year-old.
Durability, Lens, and Charging
The S70 uses Corning Gorilla Glass 3 and a ceramic bezel with 5 ATM water resistance (swimming-safe). The J1 uses chemically strengthened glass (no specific Gorilla Glass designation in the specs), no stated ATM rating, and an anodized aluminum bezel. The J1 charges via Garmin's proprietary cable. The S70 charges USB-C. If I had to bet, USB-C convenience matters more day-to-day than most buyers expect — proprietary cables have a way of disappearing.
Who Should Buy Which
Get the Garmin Approach J1 if:
- You're buying for a junior golfer and the swing-disruption concern is real
- You want AMOLED GPS at $300 without paying for features you won't use
- You play rounds, check distances, keep score, and don't need analytics
- You're indifferent to heart rate, music, contactless payments, and weather data
- You already have a Garmin or another device for fitness tracking
Get the Garmin Approach S70 (42mm) if:
- You want club recommendations that account for wind and your actual shot history
- You'd use strokes gained data to identify where you're losing shots
- You want a golf watch that's also a legitimate everyday watch (music, payments, notifications)
- You can commit to the Garmin Golf membership to unlock green contours and full Virtual Caddie
- You're replacing both a golf watch and a fitness tracker in one purchase
The Bottom Line
The J1 is exactly what it says it is — a light, simple, accurate GPS watch with a great screen, purpose-built for young golfers but genuinely functional for anyone who doesn't want extras. The S70 42mm is Garmin's full golf platform in the smaller case, and the feature gap between these two is enormous: wind, Virtual Caddie, strokes gained, health tracking, music, contactless payments. If those features matter to you, no amount of squinting at the J1's feature list changes the math. And if you're buying for a junior golfer who just needs to know how far the pin is, spending $650 instead of $300 won't lower their scores.
Get the Garmin Approach S70 (42mm).