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Choose a Garmin Approach S70 by case fit and the golf functions you expect to use regularly. Its advanced features have setup, data and sometimes membership requirements, so the purchase is more than choosing a colour. Try the screen on your wrist, identify the exact 42mm or 47mm version and separate the basic watch from any additional service you intend to activate.
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Guide checked: 8 September 2026. This article uses the linked manufacturer documentation. We have not carried out hands-on product testing. Check the exact model and current buying terms before ordering.
| Question | What to check | Why it matters |
|---|---|---|
| Case size | 42mm or 47mm on your wrist | Comfort and readability are personal |
| Battery mode | The figure for that size and operating mode | Smartwatch and satellite figures differ |
| Virtual caddie | Required recorded rounds and phone connection | Recommendations need an established history |
| Green contours | Membership and supported course | An advanced feature may need more than hardware |
Table of Contents
Try both case sizes where possible
Wear each candidate securely and check the screen at a natural viewing angle. Consider how it sits under your normal cuff and whether you can use the controls comfortably. A larger display can be appealing, but the useful choice is the one you can wear and read during a round. Do not decide from case diameter alone without seeing the complete fit.
Garmin’s battery table distinguishes the sizes: typical-use limits in all-satellite-systems mode are up to 15 hours for 42mm and 20 hours for 47mm. Actual endurance depends on enabled features and use. Treat those figures as a comparison of stated modes, not a promise about your particular settings or the condition of a used watch.
Understand what the virtual caddie needs
The S70 virtual-caddie instructions require five rounds recorded with Approach sensors or Club Prompt enabled, uploaded scorecards and connection to a paired phone running Garmin Golf during each round. The recommendations use information including past club performance. This is a setup commitment to understand before buying chiefly for that feature.
Think about whether you will maintain a useful record. If club assignments or shots are wrong, investigate and correct them before interpreting a recommendation as evidence for changing your bag. A calculated suggestion can prompt a decision, but it does not replace judgement about the lie, target and shot you can play. We have not validated the recommendations against your game.
Check green contours separately from the watch purchase
Garmin’s green-contour support information requires a Garmin Golf membership, current software and a course that supports the feature. Confirm your regular venues before paying for access because compatibility with the watch does not establish coverage of every course. Check the current UK terms for the service rather than carrying a price over from a foreign product page.
Write down the feature you want and whether it requires hardware, sensors, phone access or a paid plan. This makes it easier to compare a complete setup with a simpler alternative. If a retailer includes a trial, distinguish the trial period from continuing access. A feature can be attractive without being worth an ongoing cost for the courses you actually play.
Learn the permitted configuration for your round
The S70 manual explains the available golf settings. Use the current R&A Rule 4.3 and your competition’s conditions to determine permitted use; distance information and functions that interpret playing conditions are not all treated alike. Ask the committee if a particular feature is unclear.
Practise finding the relevant setting before competition day. Do not assume an advanced feature is allowed simply because it is available on a golf watch, or that one mode removes every possible rules question. Keep the buying demonstration focused on understanding what the watch displays and which functions you intend to use in each setting.
Buy the capabilities you will actually maintain
Compare the complete offer for the selected case size, colour and condition. For a used unit, inspect the screen, controls, strap and charging connection and ask about recent battery performance. For a new package, identify which sensors or accessories are included instead of assuming that equipment shown in a lifestyle image comes in the box.
Our GPS watch buying guide offers a broader starting point. Choose the S70 when its display, fit and advanced workflow answer specific needs you have. If your routine is simply checking a few distances and returning to the shot, compare that task with a simpler device before committing to features you may never set up.