Samsung Galaxy Watch6 Classic (47 mm) / Apple Watch Series 6 (40 mm, GPS)

Samsung Galaxy Watch6 Classic (47 mm): Galaxy Watch6 Classic 47 mm (2023); the Bluetooth version is SM-R960, and the LTE version is sold under a separate model code. The 43 mm Classic, the flat-bezel Galaxy Watch6 and the later Watch8 Classic are separate models.

Apple Watch Series 6 (40 mm, GPS): Apple Watch Series 6, 40 mm aluminium case, GPS (2020). The 44 mm and GPS + Cellular versions, stainless steel/titanium cases and the Nike and Hermès editions are separate.

Specification	Samsung Galaxy Watch6 Classic (47 mm)	Apple Watch Series 6 (40 mm, GPS)
Release year	2023	2020
Display	1.5-inch (37.3 mm) Super AMOLED, 480 × 480 pixels; full-colour Always On Display; sapphire crystal glass According to Samsung, the display is larger than on the Watch4 Classic and the rotating bezel is 15% thinner. Sapphire crystal resists scratches; the bezel partly surrounds the edge of the screen. Samsung	Always-On Retina LTPO OLED; 324 × 394 pixels, 759 mm² display area; 1000 nits The Always-On display keeps the time and complications visible with the wrist down. Apple
Rotating bezel	Physical rotating bezel; menu, notification and app control Turning the bezel moves between notifications and tiles without touching the screen; its position is sensed by a 3D Hall sensor. Samsung	—
Case	Stainless steel; quick-release band button Samsung	—
Processor, memory and storage	Exynos W930 dual-core 1.4 GHz; 2 GB memory, 16 GB storage Samsung	—
Battery and charging	425 mAh; up to 40 hours with Always On Display off, up to 30 hours with it on; WPC-based fast wireless charging Samsung’s fast-charge testing used the magnetic fast-charging cable and a separately sold 25 W adapter. Battery life varies with network, usage and watch face. Samsung	Built-in lithium-ion battery; up to 18 hours; magnetic charging cable (1 m) The 18-hour figure comes from Apple’s August 2020 testing with pre-production watches paired to an iPhone; it varies with use. Apple
Operating system	Launched with Wear OS 4 (Wear OS Powered by Samsung) and One UI 5 Watch Setup needs a phone with Google Mobile Services, Android 10 or later and more than 1.5 GB of memory; it does not work with an iPhone. Samsung	—
Sensors	Samsung BioActive Sensor (optical heart rate + electrical heart signal + bioelectrical impedance analysis), temperature, accelerometer, barometer, gyro, geomagnetic, light and 3D Hall sensor Bioelectrical impedance analysis passes a weak current through the body when two fingers rest on the buttons to estimate muscle, fat and water; it should not be used with a pacemaker or during pregnancy. ECG and blood pressure work only in approved markets through Samsung Health Monitor. Samsung	—
Connectivity	Bluetooth 5.3, Wi‑Fi 2.4 + 5 GHz, NFC, GPS/GLONASS/BeiDou/Galileo LTE is only on the LTE version; on the Bluetooth version internet and notifications come through the paired phone. Samsung	—
Durability	5ATM + IP68, MIL-STD-810H 5ATM corresponds to 50 metres for 10 minutes; it is not suitable for diving or high-pressure water. IP68 covers 1.5 metres in fresh water for 30 minutes. Samsung	—
Size and weight	46.5 × 46.5 × 10.9 mm; 59.0 g (without band) Thickness is measured without the health sensors. Samsung	40 × 34 × 10.7 mm; 30.5 g (aluminium, without band) Apple
Case and version	—	40 mm aluminium case, GPS; Silver, Space Gray, Gold, Blue, (PRODUCT)RED Stainless steel and titanium cases were only sold in the GPS + Cellular version. The 44 mm model uses the same chip but has a different display and weight. Apple
Water resistance	—	50 metres (ISO 22810:2010) Suitable for shallow-water swimming in a pool or the sea, but not scuba diving, waterskiing or high-velocity water. Apple
Chip	—	S6 SiP with 64-bit dual-core processor; W3 wireless chip; U1 Ultra Wideband chip Ultra Wideband availability varies by region. Apple
Storage	—	32 GB Apple
Health sensors	—	Blood oxygen sensor (Blood Oxygen app), electrical heart sensor (ECG app), third-generation optical heart sensor Apple states Blood Oxygen measurements are not for medical use and are only designed for general fitness and wellness. The ECG app is not intended for people under 22. Apple
Other sensors and safety	—	Always-on altimeter, compass, accelerometer up to 32 g with fall detection, gyroscope, ambient light sensor; Emergency SOS On the GPS model, Emergency SOS needs the iPhone nearby; otherwise the watch must be on a known Wi‑Fi network with Wi‑Fi Calling on. International emergency calling is only on the cellular model. Apple
Wireless	—	Wi‑Fi 802.11b/g/n 2.4 and 5 GHz; Bluetooth 5.0 LTE and UMTS are only on GPS + Cellular models. Apple
Other	—	Speaker, microphone, Apple Pay, GymKit; ceramic and sapphire crystal back Apple
Compatibility	—	Requires an iPhone 6s or later with iOS 14 or later Apple