Samsung Galaxy Watch3 vs Samsung Galaxy S26 Ultra

Specs comparison

Add up to three devices side by side to compare their full specifications, features, performance, battery, and key differences in one place. Make informed decisions and find the device that best suits your needs and budget. Search for a device in an empty slot to add it.

WhatsApp Add a third device Clear all

2 of 2 devices The best value in a row is marked Best
Samsung Samsung Galaxy Watch3 View Specs Change
Samsung Samsung Galaxy S26 Ultra View Specs Change
Brand Samsung Samsung
Versions SM-R855F, SM-R845F (Global, LTE model); SM-R855U, SM-R845U (USA, LTE model); SM-R850, SM-R840 (Wi-Fi only) —
Announced 2020, August 05 2026, February 25
Released 2020, August 06 2026, March 06
Availability Available Available
Technology GSM / HSPA / LTE GSM / CDMA / HSPA / EVDO / LTE / 5G
2G Bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900CDMA 800 / 1900 & TD-SCDMA
3G Bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100CDMA2000 1xEV-DO
4G Bands 1, 3, 5, 7, 8, 20 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - International1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 48, 66, 71 - USA unlocked
5G Bands — 1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 41, 66, 71, 77, 78, 257, 258, 260, 261 SA/NSA/Sub6/mmWave - USA unlocked
Speed HSPA, LTE HSPA, LTE (CA), 5G
Dimensions 45mm: 45 x 46.2 x 11.1 mm41mm: 41 x 42.5 x 11.3 mm 163.6 x 78.1 x 7.9 mm(6.44 x 3.07 x 0.31 in)
Weight 53.8 g (45mm stainless steel), 48.2 g (41mm stainless steel), 43 g (45mm titanium) Best 214 g (7.55 oz)
Build Glass front (Gorilla Glass DX), stainless steel 316L or titanium frame, rotating bezel Glass front (Corning Gorilla Armor 2), glass back (Gorilla Glass Victus 2), aluminum frame (Armor Aluminum 2)Stylus Feature:Passive EMR input only (No Bluetooth / Air Actions)
Stylus — Yes, S Pen (built in, no Bluetooth/Air Actions)
SIM eSIM (LTE models) Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time) - INTNano-SIM + eSIM + eSIM (max 2 at a time) - USANano-SIM + Nano-SIM - CN
Protection / IP Rating IP68 dust/water resistant, 5ATMMIL-STD-810G compliant IP68 dust tight and water resistant (immersible up to 1.5m for 30 min)Armor Aluminum 2
Display Type Super AMOLED Dynamic LTPO AMOLED 2X
Display Size 1.4 inches 6.9 inches, 115.9 cm2 (~90.7% screen-to-body ratio) Best
Resolution 360 x 360 pixels 1440 x 3120 pixels, 19.5:9 ratio
Pixel Density ~364 ppi ~500 ppi Best
Refresh Rate 60Hz 120Hz Best
Peak Brightness — 2600 nits (peak)
Protection Corning Gorilla Glass DX Corning Gorilla Armor 2DX anti-reflective coatingPrivacy Display
Display Features Always-On-Display HDR10+
Operating System Tizen Android
OS Version 5.5 16
Update Support — Upgradable to Android 17; up to 7 major OS updates
User Interface — One UI 8.5, upgradable to One UI 8.5
Chipset Exynos 9110 (10 nm) Qualcomm SM8850-1-AD Snapdragon 8 Elite Gen 5 for Galaxy (3 nm)
CPU Dual-core 1.15 GHz Cortex-A53 Octa-core (2x4.74 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)
GPU Mali-T720 Adreno 840 (1.3GHz)
RAM Options 1GB 12GB, 16GB
Storage Options 4GB / 1GB RAM8GB / 1GB RAM 256GB / 12GB RAM512GB / 12GB RAM1TB / 16GB RAM
Storage Type eMMC UFS 4.X
Card Slot No No
Cameras — Quad camera
Modules No Camera 200 MP, f/1.4, 23mm (wide), 1/1.3", 0.6µm, multi-directional PDAF, OIS10 MP, f/2.4, 67mm (telephoto), 1/3.94", 1.0µm, PDAF, OIS, 3x optical zoom50 MP, f/2.9, 111mm (periscope telephoto), 1/2.52", 0.7µm, PDAF, OIS, 5x optical zoom50 MP, f/1.9, 120˚ (ultrawide), 1/2.5", 0.7µm, dual pixel PDAF, Super Steady video
Features — Laser AF, Best Face, Horizon Lock, LED flash, auto-HDR, panorama
Video — 8K@24/30fps, 4K@30/60/120fps, 1080p@30/60/120/240fps, 10-bit HDR, HDR10+, stereo sound rec., gyro-EIS
Cameras — Single camera
Modules No Camera 12 MP, f/2.2, 23mm (wide), 1/3.2", 1.12µm, dual pixel PDAF
Features — HDR, HDR10+
Video — 4K@30/60fps, 1080p@30fps
Loudspeaker Yes Yes, with stereo speakers
Audio Jack No No
Audio Codec Not Available High-bitrate audio support
WLAN Wi-Fi 802.11 b/g/n Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct
Bluetooth 5.0, A2DP, LE 6.0, A2DP, LE
GPS / Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS, BDS, GALILEO, QZSS
NFC Yes Yes
Radio No No
USB No USB Type-C 3.2, DisplayPort 1.2, OTG
Fingerprint No Yes, (under display, ultrasonic)
Face Unlock No Yes
Sensors Accelerometer, gyro, barometer, light, optical heart rate, electrical heart (ECG) Accelerometer, gyro, proximity, compass, barometer
Other Features ECG certifiedBlood pressure monitorCompatible with standard 22mm (45mm) / 20mm (41mm) strapsSizes: 41mm, 45mm; Bluetooth and LTE versions Samsung DeX, Samsung Wireless DeX (desktop experience support)Ultra Wideband (UWB) support
Battery Type Li-Ion Li-Ion
Battery Capacity 340 mAh (45mm)247 mAh (41mm) 5000 mAh Best
Wired Charging N/A 60W wired, PD3.0, 75% in 30 min
Wireless Charging Wireless (WPC-based) 25W wireless (Qi2.2)
Reverse Wireless Charging N/A 4.5W reverse wireless
Colours Mystic Bronze, Mystic Black, Mystic Silver: Stainless Steel; Mystic Black: Titanium Cobalt Violet, Sky Blue, Black, White, Silver Shadow, Pink Gold
Models SM-R840, SM-R850, SM-R845F, SM-R855F, SM-R845U, SM-R855U SM-S948B, SM-S948B/DS, SM-S948U, SM-S948U1, SM-S948W, SM-S948N, SM-S9480, SM-S948E, SM-S948E/DS
SAR — 1.09 W/kg (head) 1.19 W/kg (body)
SAR EU — 1.28 W/kg (head) 1.35 W/kg (body)

The matchups our readers check most. Tap any pair to see the full side-by-side specs comparison.