Apple Watch Series 8 (45 mm, GPS) / Samsung Galaxy Watch5 (40 mm, Bluetooth)

Apple Watch Series 8 (45 mm, GPS): Apple Watch Series 8, 45 mm aluminium case, GPS model. The 41 mm case, GPS + Cellular and stainless steel versions are separate models; weight and screen size differ.

Samsung Galaxy Watch5 (40 mm, Bluetooth): The 40 mm aluminium Bluetooth version of the Galaxy Watch5, in Graphite, Pink Gold and Silver. The 44 mm version has a larger screen and battery; the titanium Galaxy Watch5 Pro is a separate model.

SpecificationApple Watch Series 8 (45 mm, GPS)Samsung Galaxy Watch5 (40 mm, Bluetooth)
Release year20222022
DisplayAlways-On Retina LTPO OLED; 396 × 484 pixels; 1143 sq mm display area; up to 1000 nits

The LTPO panel can lower its refresh rate a lot, so the screen stays on dimmed when the wrist is down.

Apple
1.2-inch (30.4 mm) Super AMOLED, 396 × 396 pixels; full-colour Always On Display; sapphire crystal

Sapphire crystal is a glass material that strongly resists scratching. The 44 mm version has a 1.4-inch, 450 × 450 screen.

Samsung
ChipS8 SiP with 64-bit dual-core processor; W3 wireless chip; U1 (Ultra Wideband)

Ultra Wideband is used for close-range location with an iPhone; availability varies by region.

Apple
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Health sensorsBlood oxygen sensor; electrical heart sensor (ECG app); third-generation optical heart sensor

The Blood Oxygen app is not for medical use. The ECG app is not intended for people under 22 and may not be available in every country.

Apple
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Motion and safetyHigh-g accelerometer up to 256 g (Fall Detection and Crash Detection); high dynamic range gyroscope; Emergency SOS; international emergency calling

On the GPS model, Emergency SOS needs a nearby iPhone or Wi-Fi Calling; international emergency calling works only on cellular models.

Apple
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LocationL1 GPS, GLONASS, Galileo, QZSS and BeiDou; compass; always-on altimeter

This is single-frequency (L1) GPS; drift between tall buildings can be higher than on dual-frequency models.

Apple
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ConnectivityWi-Fi 802.11b/g/n 2.4 and 5 GHz; Bluetooth 5.3 AppleBluetooth 5.2; Wi‑Fi 802.11 a/b/g/n 2.4 + 5 GHz; NFC; GPS/GLONASS/BeiDou/Galileo

This version has no LTE; the LTE version is sold separately.

Samsung
Storage32 GB Apple—
Battery and chargingUp to 18 hours; built-in lithium-ion battery; USB-C magnetic fast charging cable

Apple’s 18-hour figure is based on 90 time checks, 90 notifications, 45 minutes of app use and a 60-minute workout with music; sleep tracking is not part of that scenario.

Apple
284 mAh (typical); faster WPC-based wireless charging

WPC is the body behind the Qi wireless charging standard. The 44 mm version has a 410 mAh battery.

Samsung
DurabilityWater resistant to 50 metres under ISO 22810:2010; IP6X dust; ceramic and sapphire crystal back

Suitable for shallow-water activities in a pool or the sea; not for scuba diving, waterskiing or high-velocity water.

Apple
5ATM + IP68; MIL-STD-810H

5ATM suits shallow-water activities such as swimming, not diving.

Samsung
Size and weight45 × 38 × 10.7 mm; aluminium GPS: 38.8 g Apple39.3 × 40.4 × 9.8 mm; 28.7 g (without strap) Samsung
CompatibilityRequires iPhone 8 or later with iOS 16 or later

It cannot be used with Android phones.

Apple
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ColoursAluminium: Midnight, Starlight, Silver, (PRODUCT)RED Apple—
Case and colours—Armor Aluminum case with Sport Band; Graphite, Pink Gold, Silver Samsung
Processor—Exynos W920, dual-core 1.18 GHz Samsung
Memory and storage—1.5 GB RAM; 16 GB internal storage Samsung
Software—At launch Wear OS Powered by Samsung (Wear OS 3.5) with One UI Watch 4.5

The watch works with phones running Android 8.0 or later with more than 1.5 GB of RAM; it cannot be used with an iPhone.

Samsung
Sensors—Samsung BioActive Sensor (optical heart rate, electrical heart signal, bioelectrical impedance analysis); temperature sensor; accelerometer, barometer, gyro, geomagnetic and light sensors

The electrical heart signal is used for ECG and bioelectrical impedance for body composition estimates; availability of these features varies by country.

Samsung