Garmin Approach J1 vs Garmin Approach S70

Every spec side by side, from each maker's published figures.

Only show differences

Better figure, where one is clearly better

Share comparison

Approach J1 compared with Approach S70

	GarminApproach J1	GarminApproach S70
Overview
Released
Released	January 2026	May 2023
Display
Case sizes
Case sizes	43 mm	42 mm or 47 mm
Panel
Panel	OLED	OLED
Always-on display
Always-on display	Yes	Yes
Display detail
Display detail	1.2-inch AMOLED colour touchscreen, 390 × 390 pixels; optional always-on mode and two physical buttons. Brightness and refresh rate are not published.	42 mm version has a 1.2 inch AMOLED touchscreen with 390 x 390 pixels; 47 mm has a 1.4 inch screen with 454 x 454 pixels. Optional always-on mode and ambient-light sensor. Three physical buttons. UK table pairs the 42 mm screen's 1.2 inch figure with 32.02 mm, an inconsistent conversion; neither value is silently recalculated here. Launch German datasheet also incorrectly repeats 390 x 390 for the 47 mm display; exact current model tables establish 454 x 454.
Screen protection
Screen protection	Chemically strengthened glass.	Current UK and US model tables specify Corning Gorilla Glass 3. German launch article calls it sapphire, conflicting with its own attached Gorilla Glass datasheet; no sapphire configuration is established.
Health and fitness
ECG
ECG	No	No
Blood oxygen
Blood oxygen	No	Yes
Skin temperature
Skin temperature	No	No
Sleep apnoea alerts
Sleep apnoea alerts	No	No
High blood pressure alerts
High blood pressure alerts	No	No
Body composition
Body composition	No	No
Fall detection
Fall detection	No	No
Crash detection
Crash detection	No	No
GPS
GPS	Single-band	Dual-band (L1 and L5)
Water resistance
Water resistance	50 m	50 m
Sensors
Sensors	GPS, GLONASS and Galileo positioning, compass, gyroscope, accelerometer and ambient-light sensor. All Systems mode combines satellite systems; multi-frequency reception is not specified.	GPS, GLONASS and Galileo; 47 mm additionally has multi-band positioning and SatIQ. The exact German datasheet distinguishes 42 mm multi-GNSS from 47 mm multifrequency; current UK/US tables likewise list multi-band and SatIQ only on 47 mm. Both have Garmin Elevate wrist heart rate, Pulse Ox, barometric altimeter, compass, gyroscope, accelerometer and ambient-light sensor. Maker does not number the optical sensor generation.
Health features
Health features	Daily step counting and automatic step goals. No wrist heart-rate or blood-oxygen sensor; no ECG, sleep-apnoea or skin-temperature measurement.	Continuous heart rate, resting rate and high/low alerts, respiration, Body Battery, stress, advanced sleep, sleep coach, nap detection, HRV status, Health Snapshot, fitness age and jet-lag adviser. Pulse Ox spot checks and optional sleep monitoring. Hydration and menstrual-cycle/pregnancy tracking use Garmin Connect and an optional Connect IQ widget; these are wellness features, not medical diagnosis.
Fitness features
Fitness features	More than 43,000 preloaded golf courses, forward-tee guidance, adjustable personal par, pace-of-play timer and club suggestions. Front/middle/back yardages, hazards and layups, Green View with movable pin, digital scorecard, stroke/putt/fairway statistics, handicap scoring and AutoShot distance recording. Automatic shot detection does not record putts and may miss chips. Walking, running, cycling and pool-swimming profiles, GPS pace/distance, cadence, Auto Lap, Auto Pause and Move IQ. The exact German datasheet marks CT1 and CT10 incompatible; the owner’s guide nevertheless mentions paired Approach sensors in generic shot-detection instructions. Compatibility is unresolved and not claimed.	Over 43,000 preloaded golf courses, full CourseView vector maps, pan/zoom and touch targeting, green view with manual pin position, hazards, layups, front/middle/back distances and PinPointer. Enhanced PlaysLike distances account for slope, weather and air pressure; wind information requires a phone connected to Garmin Golf. Virtual Caddie offers club recommendations and shot-dispersion charts after five rounds with uploaded scorecards and either optional CT10 sensors or Club Prompt enabled; sensors are not mandatory. AutoShot detects fairway shots; optional CT10 sensors add putt/chip detection. Optional CT1 tags and Z30 laser range finder are supported. Scorecard, statistics, handicap scoring, swing tempo and tournament mode. Green contours need paid Garmin Golf membership; base maps and touch targeting do not. Running, cycling, gym, hiking, racket sports and pool-swimming profiles; VO2 max, recovery time, training load/effect, Garmin Coach and animated workouts. Current tables document pool swimming, not an established open-water swimming profile.
Safety features
Safety features	Pairing and account management may require a parent or guardian depending on the child’s age and region. Incident detection and emergency calls are not published.	Incident detection during supported activities and assistance require a paired compatible phone and available network; not standalone emergency communication.
Battery and connections
Battery life (maker's claim)
Battery life (maker's claim)	Up to 10 days	Up to 16 days
Mobile data option
Mobile data option	No	No
Works with
Works with	iPhone and Android	iPhone and Android
Storage
Storage	4 GB	16 GB (better)
Battery life detail
Battery life detail	Up to 10 days in watch mode with gesture wake-up; up to 15 hours in GPS mode with always-on display during golf. The March 2026 owner’s guide labels the 15-hour claim All satellite systems mode. A Battery Saver setting exists but no separate runtime is published.	42 mm up to 10 days in smartwatch mode and 15 hours using GPS; 47 mm up to 16 days and 20 hours. Current maker web conditions use gesture wake in smartwatch mode and always-on while golfing; April 2026 owner guide labels the same 15/20-hour figures all-satellite-systems mode. Headline duration is the longest standard configuration, 47 mm. Actual battery life depends on enabled sensors, notifications and connected devices.
Charging
Charging	Garmin proprietary plug charging/data cable; USB media-transfer and Garmin modes are documented. Rechargeable lithium-ion battery; operating/storage -20 to 60°C and charging 0 to 45°C. Capacity, charging power and charge time are not published.	Built-in rechargeable lithium-ion battery; Garmin proprietary charging/data connector and supplied USB cable.
Connectivity
Connectivity	Bluetooth LE; pairs through Garmin Golf with compatible iPhone or Android phones. Golf data and fitness activities sync to Garmin Golf/Garmin Connect; Garmin Express provides computer software and course updates. No cellular connectivity, Wi-Fi or Garmin Pay is listed.	Bluetooth, ANT+ and Wi-Fi; Garmin Golf, Garmin Connect, Garmin Express and Connect IQ. Garmin Pay with supported banks; downloaded personal music and supported Spotify, Amazon Music and Deezer services, with subscriptions where required and Bluetooth headphones. Phone notifications, Android-only text replies and notification images, calendar, weather and morning report. No cellular version. Current UK/US tables state 16 GB memory/history for both sizes; a later Swiss S50 comparison leaflet lists S70 at 32 GB without a separate hardware identity, so that conflicting sibling comparison is not used to create a version.
Storage
Storage	4 GB memory/history.	–
Design
Weight (lightest version)
Weight (lightest version)	29 g (better)	44 g
Software
Software	Garmin	Garmin
Case materials
Case materials	Fibre-reinforced polymer case, anodised aluminium bezel, plastic buttons and elastic nylon fabric hook-and-loop ComfortFit band.	Ceramic bezel, Gorilla Glass 3 lens and silicone band. UK range has White/Peach and Powder Grey/Amp Yellow 42 mm finishes, and Black/Red 47 mm. US regional SKU codes differ, with the same three finishes.
Size
Size	43 × 43 × 11.4 mm; 29 g; fits wrists 115–195 mm.	42 mm is 42 x 42 x 12.6 mm and 44 g with silicone band, fitting 115–185 mm wrists with a 20 mm QuickFit attachment. 47 mm is 47 x 47 x 13.4 mm and 56 g, fitting 130–205 mm wrists with 22 mm QuickFit. Headline weight is the lighter 42 mm version. Launch German datasheet rounds thickness to 13/14 mm; exact current UK figures are retained.
Water resistance detail
Water resistance detail	5 ATM: pressure equivalent to 50 m, not a diving-depth claim. Pool-swimming activity is supported; the touchscreen is unavailable during swims.	–
Reference and release detail
Reference and release detail	Available now in the US and Germany on 20 January 2026; the first UK shipping day was not established. Current UK security updates are promised until at least 20 January 2028, which is not an end-of-support announcement. No direct predecessor is claimed.	Garmin's US announcement on 23 May 2023 states available now; German launch likewise says immediately available. This establishes the first documented on-sale day; an exact UK first shipping day is not independently established. No explicit maker predecessor relationship has been found in the read sources.
Bands
Bands	20 mm quick-release ComfortFit fabric band. Current UK/US tables describe industry-standard bands; the March 2026 owner’s guide says the watch is not compatible with third-party bands. This conflict remains unresolved; use exact Approach J1 replacement bands.	–
Colours
Colours	Cloud blue aluminium bezel with black/azure ComfortFit band (010-03898-00); silver aluminium bezel with lilac ComfortFit band (010-03898-10). Both are sellable in the current UK catalogue. The launch calls the second bezel lilac, while current product naming says silver.	–
In the box
In the box	Approach J1 junior GPS golf watch with fabric band, charging/data cable and documentation.	–