Samsung Galaxy Watch 8 vs Samsung Galaxy Watch Ultra 2025
Compare specifications, current prices and availability. Choose up to four products from the same family.
Add up to 2 more items to compare
Apple Watch SE 2 Price range: KSh 28,500.00 through KSh 32,000.00
Samsung Galaxy Watch 6 Price range: KSh 22,500.00 through KSh 23,500.00
Samsung Galaxy Watch 6 Classic Price range: KSh 22,500.00 through KSh 25,500.00
Google Pixel Watch 2 Original price was: KSh 27,000.00.KSh 26,500.00Current price is: KSh 26,500.00.
At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Samsung Galaxy Watch 8 |  Samsung Galaxy Watch Ultra 2025 |
|---|---|---|
| Price | Price range: KSh 26,500.00 through KSh 28,500.00 | KSh 43,500.00 |
| Display | 44 mm: 1.47-inch Super AMOLED 40 mm: 1.34-inch Super AMOLED | 1.5-inch Super AMOLED |
| Battery capacity | 44 mm: 435 mAh 40 mm: 325 mAh | 590 mAh |
| Water resistance | 5 ATM | 10 ATM |
| Processor | Exynos W1000 (3 nm) | Exynos W1000 (3 nm) |
| RAM | 2 GB | 2 GB |
| Storage | 32 GB | 64 GB |
| Operating system | Wear OS 6 Powered by Samsung; One UI 8 Watch | Wear OS Powered by Samsung; One UI 8 Watch |
| Network / cellular | LTE on LTE models only | 3G UMTS and 4G LTE; availability varies by carrier and region |
| Positioning / GNSS | Built-in dual-frequency L1 + L5 GPS; GPS, GLONASS, BeiDou and Galileo | Built-in dual-frequency L1 + L5 GPS; GPS, GLONASS, BeiDou and Galileo |
| Health & wellness features | Heart and wellness tracking; Antioxidant Index, Vascular Load, Energy Score and stress features. Availability varies by market and paired phone. | Heart-rate monitoring, ECG, blood pressure, body composition, blood oxygen, skin temperature, Energy Score, Antioxidant Index and Vascular Load; availability varies by market and paired phone |
Full specifications
2 of 4 products
| Specification | Samsung Galaxy Watch 8 | Samsung Galaxy Watch Ultra 2025 |
|---|---|---|
| Identity & design | ||
| Brand | Samsung | Samsung |
| Model | Galaxy Watch8 | Galaxy Watch Ultra (2025) |
| Announced | 9 July 2025 | July 2025 |
| Dimensions | 44 mm: 43.7 × 46.0 × 8.6 mm 40 mm: 40.4 × 42.7 × 8.6 mm | 47.4 × 47.1 × 12.1 mm |
| Weight | 44 mm: 34.0 g 40 mm: 30.0 g Measured without band | 60.5 g |
| Build materials | Aluminium case; sapphire crystal display | Grade 4 titanium case; sapphire-crystal display |
| Controls / buttons | Touchscreen and physical buttons | Touchscreen; Quick button; Home and Back buttons; Double Pinch gesture |
| Display | ||
| Display | 44 mm: 1.47-inch Super AMOLED 40 mm: 1.34-inch Super AMOLED | 1.5-inch Super AMOLED |
| Screen resolution | 44 mm: 480 × 480 pixels (327 ppi) 40 mm: 438 × 438 pixels (327 ppi) | 480 × 480 pixels |
| Display protection | Sapphire crystal | Sapphire crystal |
| Display features | Full-colour Always-On Display; up to 3,000 nits peak brightness | Full-colour Always-On Display; up to 3,000 nits |
| Performance & software | ||
| Processor | Exynos W1000 (3 nm) | Exynos W1000 (3 nm) |
| CPU | 5-core CPU | 5-core CPU up to 1.6 GHz |
| RAM | 2 GB | 2 GB |
| Storage | 32 GB | 64 GB |
| Operating system | Wear OS 6 Powered by Samsung; One UI 8 Watch | Wear OS Powered by Samsung; One UI 8 Watch |
| Connectivity | ||
| Network / cellular | LTE on LTE models only | 3G UMTS and 4G LTE; availability varies by carrier and region |
| SIM / eSIM | eSIM on LTE models | eSIM |
| Wi-Fi | Wi-Fi 2.4 GHz and 5 GHz | 802.11a/b/g/n, 2.4 GHz and 5 GHz |
| Bluetooth | Bluetooth 5.3 | Bluetooth 5.3 |
| NFC | Supported | Supported |
| Positioning / GNSS | Built-in dual-frequency L1 + L5 GPS; GPS, GLONASS, BeiDou and Galileo | Built-in dual-frequency L1 + L5 GPS; GPS, GLONASS, BeiDou and Galileo |
| Audio & communication | ||
| Speaker | — | Speaker and siren |
| Microphone | — | Microphone |
| Calling | — | Standalone LTE calling and Bluetooth calling; carrier support required |
| Sensors, health & fitness | ||
| Sensors | Samsung BioActive Sensor (optical bio-signal, electrical heart signal and bioelectrical impedance analysis), temperature sensor, accelerometer, barometer, gyroscope, geomagnetic sensor and light sensor | Samsung BioActive Sensor (optical heart-rate, electrical heart and bioelectrical impedance analysis), infrared temperature sensor, accelerometer, barometer, gyroscope, geomagnetic sensor and light sensor |
| Health & wellness features | Heart and wellness tracking; Antioxidant Index, Vascular Load, Energy Score and stress features. Availability varies by market and paired phone. | Heart-rate monitoring, ECG, blood pressure, body composition, blood oxygen, skin temperature, Energy Score, Antioxidant Index and Vascular Load; availability varies by market and paired phone |
| Sleep tracking | Sleep tracking, sleep coaching, Bedtime Guidance and sleep-apnoea features where available | Sleep tracking, Bedtime Guidance, sleep coaching and sleep-apnoea features where available |
| Sports / workout modes | — | Multiple workout modes including multisport and automatic workout detection |
| Training & outdoor features | Running Coach and dual-frequency route tracking | Dual-frequency GPS; GPX routes; Track Back; Running Coach; personalised heart-rate zones; Functional Threshold Power |
| Safety & emergency features | — | Fall detection, SOS and siren features when configured |
| Battery & durability | ||
| Battery capacity | 44 mm: 435 mAh 40 mm: 325 mAh | 590 mAh |
| Battery life | — | Up to 80 hours with Always-On Display off; up to 60 hours with Always-On Display on; up to 100 hours in Power Saving Mode |
| Charging | Fast WPC-based wireless charging | WPC-based wireless charging |
| Water resistance | 5 ATM | 10 ATM |
| Durability / certifications | IP68; MIL-STD-810H | IP68; MIL-STD-810H |
| Compatibility | ||
| Phone compatibility | Android 12 or later with more than 1.5 GB RAM and Google Mobile Services; compatibility varies by market and device | Android 12 or later with more than 1.5 GB RAM and Google Mobile Services; compatibility varies by market and device |
| Companion app | Samsung Health | Galaxy Wearable and Samsung Health |
| Colors | Graphite and Silver | Titanium Blue; Titanium Gray; Titanium White; Titanium Silver |
Related comparisons
Apple Watch SE 2Samsung Galaxy Watch 8Samsung Galaxy Watch 6Samsung Galaxy Watch 8Samsung Galaxy Watch 6 ClassicSamsung Galaxy Watch 8Google Pixel Watch 2Samsung Galaxy Watch 8
AmazFit BalanceSamsung Galaxy Watch 8
Samsung Galaxy Fit 3Samsung Galaxy Watch 8
AmazFit CheetahSamsung Galaxy Watch 8
OnePlus Watch 2Samsung Galaxy Watch 8
Samsung Galaxy Watch UltraSamsung Galaxy Watch 8
Samsung Galaxy Watch 7Samsung Galaxy Watch 8