Only the differences are shown. 15 specs stay the same.
+0you gain
−0you give up
Galaxy Watch4 came out in August 2021. Galaxy Watch4 Classic came out in August 2021.
Display
1.2-inch (40 mm), 1.4-inch (44 mm) → 1.2-inch (42 mm), 1.4-inch (46 mm)
Corning Gorilla Glass with DX
Battery & charging
247 mAh (40 mm), 361 mAh (44 mm) → 247 mAh (42 mm), 361 mAh (46 mm)
Design & durability
40 mm, 44 mm → 42 mm, 46 mm
Stainless steel, Physical rotating bezel
Connectivity
Bluetooth Not stated by Samsung → 5.0
Price check
Galaxy Watch4 Classic launched at $349.99
All 15 differences
Price1 change
Price check
Galaxy Watch4 Classic — launched at $349.99
What your Galaxy Watch4 sells for
- Samsung Trade-In
- Sold listings on eBay
eBay may ask you to sign in to see sold prices.
Links open in a new tab. Prices are set by each seller and change daily.
Starting price
$249.99›$349.99+$100
What does this mean?
The lowest US price Samsung announced when the watch came out, before sales tax. Most models start with the smallest Bluetooth version.
This is not what it costs today: check the used links for current prices. If Samsung has not confirmed a price, the site shows "Price not confirmed by Samsung".
Display3 changes
Display size
1.2-inch (40 mm), 1.4-inch (44 mm)›1.2-inch (42 mm), 1.4-inch (46 mm)
Resolution
396 x 396 (40 mm), 450 x 450 (44 mm)›396 x 396 (42 mm), 450 x 450 (46 mm)
Cover glass
Corning Gorilla Glass with DX+›Corning Gorilla Glass with DX
What does this mean?
The glass over the screen. Samsung uses Sapphire Crystal on recent models; Galaxy Watch4 used Corning Gorilla Glass.
Samsung says Galaxy Watch5 was its first smartwatch with a Sapphire Crystal display.
Display type
Super AMOLED (same on both)
What does this mean?
Super AMOLED is Samsung's name for its OLED screens, where each pixel makes its own light.
Black parts of the screen are switched off, so a dark watch face shows clearly without lighting the whole screen.
Peak brightness
Not stated by Samsung (for both)
What does this mean?
How bright the screen can get at most, in nits (a unit of brightness).
A brighter screen is easier to read in direct sunlight. Samsung says the 5,000 nits of Galaxy Watch Ultra2 is a peak in part of the screen; full-screen brightness may differ.
Always On Display
Full Color Always On Display (same on both)
What does this mean?
Samsung's Always On Display keeps the watch face showing when your wrist is down.
Samsung's battery figures are shorter with it on: for Galaxy Watch6 Classic, up to 30 hours with it on and up to 40 hours with it off.
Battery & charging1 change · 1 unconfirmed
Battery capacity
247 mAh (40 mm), 361 mAh (44 mm)›247 mAh (42 mm), 361 mAh (46 mm)
What does this mean?
The battery's capacity in mAh (milliamp-hours), for each case size. For most models Samsung gives the capacity rather than hours of use.
Samsung says actual battery life varies with how you use the watch, the model and the network, so capacity is only a rough guide.
Battery life (Samsung's figure)
Not stated by Samsung›Up to 40 hours; 30 minutes of charging provides up to 10 hours (Samsung).
What does this mean?
The hours of use Samsung states, for the models it gives a figure for.
Samsung's figures come from its own tests; workouts with GPS and LTE use shorten them.
Charging
WPC-based wireless charging (same on both)
Fast charging
Not stated by Samsung (for both)
What does this mean?
Samsung's name for how fast the watch charges on its wireless charger.
Samsung gives examples for some models, such as eight minutes of charging covering eight hours of sleep tracking on Galaxy Watch5.
Design & durability5 changes
Case sizes
40 mm, 44 mm›42 mm, 46 mm
Case material
Aluminum›Stainless steel
Weight
25.9 g (40 mm), 30.3 g (44 mm)›46.5 g (42 mm), 52 g (46 mm)
Samsung weights are measured without the band.
What does this mean?
The weight of the watch for each case size, as Samsung gives it.
Samsung weighs its watches without the band, so the watch on your wrist weighs more.
Size
40.4 x 39.3 x 9.8 mm (40 mm), 44.4 x 43.3 x 9.8 mm (44 mm)›41.5 x 41.5 x 11.2 mm (42 mm), 45.5 x 45.5 x 11.0 mm (46 mm)
Rotating bezel
None›Physical rotating bezel
What does this mean?
A ring around the screen that turns, for scrolling through the watch's screens without touching the display. Samsung's Classic models have one.
Watches without it use the touch screen and buttons instead.
Water resistance
5ATM (same on both)
What does this mean?
5ATM and 10ATM are water-resistance classes: the pressure of 50 meters and 100 meters of water. Samsung describes 10ATM as up to 100 meters of water for up to 10 minutes.
Samsung says water resistance is not permanent and can diminish over time, and to rinse the watch in fresh water after it has been in seawater.
Matters most if: You swim with your watch.
Dust and water rating
IP68 (same on both)
What does this mean?
IP68 means dust-tight and water-resistant under water: Samsung says up to 1.5 meters (5 feet) of fresh water for up to 30 minutes. IP69K, on Galaxy Watch Ultra2, adds protection against powerful, hot water jets.
Neither rating makes the watch a diving instrument. Samsung says Galaxy Watch Ultra2 is its first watch certified to EN13319, a standard for diving instruments.
Military-standard testing
MIL-STD-810G (same on both)
What does this mean?
MIL-STD-810 is a set of US military test methods, such as heat, cold, drops and dust. Samsung names the version the watch passed: 810G or the newer 810H.
Samsung says real-world use may vary from the test conditions and extreme conditions are not guaranteed.
Other certifications
Not stated by Samsung (for both)
Extra button
Not stated by Samsung (for both)
Band
Not stated by Samsung (for both)
What does this mean?
How the band attaches, or the band the watch comes with, as Samsung names it. The Dynamic Lug System on Galaxy Watch Ultra, Watch8, Watch8 Classic and Watch9 holds the watch closer to the wrist.
Samsung says it keeps the sensors in place for more reliable health readings. When you buy a new band, check that it lists your watch model.
Connectivity4 unconfirmed
Bluetooth
Not stated by Samsung›5.0
Wi-Fi
Not stated by Samsung›802.11 a/b/g/n 2.4+5GHz
NFC
Not stated by Samsung›Yes
What does this mean?
Near-field communication: lets you pay by holding the watch near a card reader.
Paying with the watch also needs a payment app and a bank that supports it in your country.
GPS
Not stated by Samsung›GPS / Glonass / Beidou / Galileo
What does this mean?
The satellite systems the watch uses to find where you are. "L1+L5 Dual-Frequency" means it listens to two GPS frequencies.
Samsung says Galaxy Watch7 was the first Galaxy smartwatch with dual-frequency GPS, and that LTE models can use GPS without a phone.
LTE model
Yes (same on both)
What does this mean?
Whether Samsung sells an LTE version, which has its own mobile connection, for calls and data without your phone nearby.
Samsung says the LTE version needs a separate plan from your carrier, and some carriers do not support calls without the phone.
Matters most if: You run or travel without your phone.
What's new
RSS feedAdded Apple Watch vs Galaxy Watch
Compare any Apple Watch with any Galaxy Watch with Wear OS, in Apple's and Samsung's own words. The first row says which phone each watch works with. Only rows where both makers measure the same thing count as a gain or a loss; water ratings, blood pressure features and battery capacity, which Apple does not publish, are shown side by side. You can pick a Galaxy Watch on the Apple Watch tab and an Apple Watch on the Galaxy Watch tab. Galaxy Watch6 and Watch6 Classic now show their US launch prices from Samsung.
Added Samsung Galaxy Watch
Galaxy Watch models with Wear OS, from Galaxy Watch4 (2021) to Galaxy Watch9 and Galaxy Watch Ultra2 (2026), checked against Samsung's own pages only, with a page for each model, comparisons with each other, launch prices from Samsung and model numbers in Find my model. Galaxy Watch3, the other Tizen watches and Gear are on the timeline by year as Legacy. The glossary explains the BioActive Sensor, 5ATM, IP69K and the Dynamic Lug System.
Added Samsung Galaxy Note
Galaxy Note10 and Note20 phones (Note10, Note10+, Note10+ 5G, Note10 Lite, Note20, Note20 5G, Note20 Ultra and Note20 Ultra 5G), checked against Samsung's own pages only, with a page for each model and comparisons with any Galaxy S, iPhone or Pixel. Older Galaxy Note phones, from the first Galaxy Note (2011) to the Galaxy Note9, are on the timeline by year. Galaxy Note and Galaxy S Ultra pages now have an S Pen row.