Garmin · 2016
Approach S20Size, Dimensions & Wrist Fit
Case Width
37.4mm
Thickness
11.3mm
Lug-to-Lug
47.6mm
Weight
42.2g
The Garmin Approach S20 sits best on flat wrist widths of about 50–68mm (≈ 13.4–18.2cm wrist circumference). Adjust the slider below to check your wrist.
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The Approach® S20 in short
The figures that decide whether this watch suits you, pulled out of the full specification sheet further down.
- Rated for 15 hours of use per charge.
- 11.3mm thick. Middle of the pack for thickness at this width.
- 0.9” x 0.9” (23 x 23 mm) display.
- chemically strengthened glass case, chemically strengthened glass glass.
Does the Approach S20 fit your wrist?
Drag the slider to your wrist width and see the Approach S20 overlaid at true scale. Lug-to-lug — not case diameter — decides whether a watch overhangs your wrist.
Watch Fit Tool
For sports watches, lug-to-lug (L2L) is what matters most — it decides whether a watch overhangs your wrist. Bulky is fine; overhang is not.
Measure at the point where you wear your watch — typically just below the wrist bone.
Flat width — lay your arm on a table, palm facing up, and measure straight across the top of your wrist with a ruler. Bone to bone; do not follow the curve down the sides.
Around — wrap a tape measure snugly round the wrist. No tape? Wrap a strip of paper, mark the overlap and hold the strip against a ruler.
Width ≠ circumference. They are different numbers — around 170mm is about 64mm across — so set the toggle to whichever one you actually measured before you type it in.
Garmin Approach® S20
Case 47.6mm · Lug-to-lug 47.6mm · Thickness 11.3mm · 42g
Sweet Spot
47.6mm on a 55mm wrist
Across the wrist it works — 3.7mm spare each side — but wide enough that the edge of the case back lifts clear of the skin.
On a 55mm wrist the sweet spot is 47–53mm lug to lug. This one is 47.6mm.
Measure where you wear it, just below the wrist bone. Either of these works — the tool converts between them.
- 1. Flat width — arm flat on a table, palm up. Measure straight across the top of the wrist, bone to bone, ignoring the curve down the sides.
- 2. Around — a tape, or a strip of paper marked and held against a ruler, snug the whole way round.
Leather: Attaches at the lugs, so the case back rests on your skin. Thins and softens with wear. Typical figures, not this model’s own.
Show the measurementsHide the measurements
- Across the wrist3.7mm spare each side
Fills the wrist without reaching the edge.
- Off the wrist11.3mm off the skin
Normal sports-watch height for a wrist this size. (11.3mm case, back against the skin)
- How it seats~6.4mm under the rim
Wide enough that the edge of the case back lifts clear of the skin.
- Weight on the wrist42g
Light enough to forget you have it on. (0.8g per mm of wrist)
Happy with the fit? Check current availability for the Approach S20.
Check offer2D Dimension Schematics
The Approach® S20 drawn to scale — from above, and in profile against the wrist.
- Garmin Approach® S2037.4mm × 47.6mm · 11.3mm thick
3D preview
Garmin Approach® S20 on a wrist
On an arm sized to your own wrist — the view a product photo never gives you.
Shapes are built from published measurements, not manufacturer 3D models — accurate proportions, generic dial.
Approach® S20 battery life
The runtime the manufacturer publishes for everyday use.
- Smartwatch15 hours
How the Approach® S20 ranks on battery
Against the 296 Garmin watches in our database, ranked on each figure Garmin publishes.
- Everyday use56 days#42 of 285
- GPS tracking15 hours#213 of 267
Approach® S20 specifications
The figures that decide a purchase, followed by every line Garmin publishes.
- Battery life
- Smartwatch mode: Up to 8 weeksGPS mode: Up to 15 hours
- Display
- 0.9” x 0.9” (23 x 23 mm)
- Resolution
- 128 x 128 pixels
- Glass
- chemically strengthened glass
- Strap
- silicone
- Storage
- 64 MB
Full specification sheet
43 published lines across 10 groups, unedited
Overview
- Family
- Garmin
General
- Battery life
- Smartwatch mode: Up to 8 weeksGPS mode: Up to 15 hours
- Display Size
- 0.9” x 0.9” (23 x 23 mm)
- Lens Material
- chemically strengthened glass
- Memory/History
- 64 MB
- Strap material
- silicone
- Display resolution
- 128 x 128 pixels
Sensors
- GPS
- Accelerometer
Product Info
- Main SKU
- 010-03723-03
- Product ID
- 516207
- Product Name
- Approach® S20
- Product Variation
- Midnight Teal
Clock Features
- Time/date
- Alarm clock
- GPS Time Sync
- Sunrise/sunset times
- Automatic daylight saving time
Golfing Features
- Digital scorecard
- Garmin AutoShot™
- Round timer/odometer
- TruSwing™ compatible
- Auto CourseView updates
- Yardage to layups/doglegs
- Hazards and course targets
- Green View with manual pin position
- Preloaded with 43,000 courses worldwide
- CT10 Automatic club tracking compatible (requires accessory)
- Yardage to F/M/B (distance to front, middle and back of green)
- Stat tracking (strokes, putts per round, greens and fairways hit)
- Measures shot distance (calculates exact yardage for shots from anywhere on course)
- automatic
Swimming Features
- Basic rest timer (up from 0) (pool swim only)
Daily Smart Features
- Connectivity
- Bluetooth® Smart and ANT+®
- Smart Notifications
- Smartphone compatibility
- iPhone®, Android™
- Pairs with Garmin Connect™ Mobile
Activity Tracking Features
- TrueUp™
- Step counter
- Calories burned
- Distance traveled
- Move alerts (displays on device after a period of inactivity)
- Auto goal (learns your activity level and assigns a daily step goal)
Health & Wellness Monitoring
- Sleep
- yes (movement-based)
Alternatives to the Approach® S20
Watches that cover a similar amount of wrist, with the measurements that separate them.
Garmin
Venu Sq 2 Music Edition
- Width
- 37mm
- Thick
- 11.1mm
- Weight
- 38g
Garmin
Venu - 40.6mm
- Width
- 37mm
- Thick
- 11.5mm
- Weight
- 37.6g
Garmin
Venu - 40.6mm · Music Edition
- Width
- 37mm
- Thick
- 11.5mm
- Weight
- 37.6g
Garmin
Lily 2 Active
- Width
- 38mm
- Thick
- 11mm
- Weight
- 29g
Garmin
vívomove® 3S
- Width
- 39mm
- Thick
- 10.9mm
- Weight
- 24.5g
Garmin
Approach® S10
- Width
- 35.5mm
- Thick
- 11.3mm
- Weight
- 35g
Approach® S20 — Frequently Asked Questions
Will the Garmin Approach S20 fit my wrist?
The Garmin Approach S20 looks balanced on flat wrist widths of roughly 50–68mm (about 13.4–18.2cm circumference). Drag the slider above to check it against your own measurement.
How long does the Garmin Approach S20 battery last?
Garmin rates it at 15 hours per charge in everyday use.
How does the Garmin Approach S20 battery compare with other Garmin watches?
At 56 days in everyday use it ranks #42 of the 285 Garmin watches in our database — the top 15% of the range. The full ranking, including GPS and power-saving figures, is on our Garmin battery life comparison.
Is the Garmin Approach S20 thick for a 37mm watch?
At 11.3mm, middle of the pack for thickness at this width. Thickness, not case width, is what decides whether a watch catches on a shirt cuff.
What other watches are the same size as the Garmin Approach S20?
Zenith Defy A3643 Revival, Omega Museum Collection Seamaster Milano Cortina 2026 Winter Olympics, Kieslect Ks2, Noise ColorFit Icon 3 all sit within half a millimetre of the Garmin Approach S20's 37.4mm case, so they cover the same amount of wrist.
What is the lug-to-lug of the Garmin Approach S20?
47.6mm, against a 37.4mm case width. Lug-to-lug is the measurement that decides overhang: if it exceeds the flat width of your wrist, the lugs sit past the edge no matter how modest the case diameter looks.
