Apple Watch Ultra vs. Series 8 Aluminum: The Ultimate Showdown

Apple's smartwatch lineup just got a serious upgrade with the Ultra, but the Series 8 remains a strong contender. Choosing between these two can be tough. This comprehensive comparison breaks down the key differences to help you decide which Apple Watch is right for you.
Phones Images

🏆 Quick Verdict

The Apple Watch Ultra is built for extreme adventurers, boasting a rugged design, longer battery life, and enhanced features for outdoor activities. The Series 8 Aluminum offers a more refined, everyday experience with faster charging and a slightly lower price point. For most users, the Series 8 is the better value.

PHONES
Phone Names Apple Watch Ultra Apple Watch Series 8 Aluminum
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - International, China, HKHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - International, China, HK
4G bands1, 2, 3, 4, 5, 6, 7, 8, 18, 19, 20, 25, 26, 28, 39, 40, 41, 66 - International, China, HK1, 2, 3, 4, 5, 6, 7, 8, 18, 19, 20, 25, 26, 28, 39, 40, 41, 66 - International, China, HK
SpeedHSPA, LTEHSPA, LTE
TechnologyGSM / HSPA / LTEGSM / HSPA / LTE
 1, 2, 3, 4, 5, 6, 7, 12, 13, 14, 17, 18, 19, 25, 26, 39, 40, 41, 66 - USA, LATAM, Canada1, 2, 3, 4, 5, 6, 7, 12, 13, 14, 17, 18, 19, 25, 26, 39, 40, 41, 66 - USA, LATAM, Canada
Launch
Announced2022, September 072022, September 07
StatusAvailable. Released 2022, September 23Available. Released 2022, September 16
Body
BuildSapphire crystal front, ceramic/sapphire crystal back, titanium frameGlass front, ceramic/sapphire crystal back, aluminum frame
Dimensions49 x 44 x 14.4 mm (1.93 x 1.73 x 0.57 in)45 x 38 x 10.7 mm (1.77 x 1.50 x 0.42 in)
SIMeSIMeSIM
Weight61.3 g (2.15 oz)32 g (41mm), 38.8 g (45mm) (1.13 oz)
 IP6X certified 100m water resistant (WR100) 40m swimproof/diving (EN13319) MIL-STD 810H certified ECG certified (region dependent SW application; HW available on all models)IP6X certified 50m water resistant ECG certified (region dependent SW application; HW available on all models)
Display
ProtectionSapphire crystal glassIon-X strengthened glass
Resolution502 x 410 pixels (~338 ppi density)484 x 396 pixels (~326 ppi density)
Size1.92 inches1.9 inches
TypeRetina LTPO OLED, 2000 nits (peak)Retina LTPO OLED, 1000 nits (peak)
 Always-on displayAlways-on display
Platform
CPUDual-coreDual-core
ChipsetApple S8Apple S8
GPUPowerVRPowerVR
OSwatchOS 9.0, upgradable to watchOS 26.1watchOS 9.0, upgradable to watchOS 26.1
Memory
Card slotNoNo
Internal32GB32GB 1GB RAM
 -eMMC 5.1
Sound
3.5mm jack NoNo
35mm jackNoNo
Loudspeaker Yes, with dual speakers (86-decibel)Yes
Comms
Bluetooth5.3, A2DP, LE5.3, A2DP, LE
NFCYesYes
PositioningGPS (L1+L5), GLONASS, GALILEO, BDSGPS, GLONASS, GALILEO, QZSS, BDS
RadioNoNo
USBNoNo
WLANWi-Fi 802.11 b/g/n, dual-bandWi-Fi 802.11 b/g/n, dual-band
Features
SensorsAccelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body), temperature (water)Accelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body)
 Temperature sensing (0.01˚ accuracy) Depth gauge (±1m accuracy) Natural language commands and dictation (talking mode) Ultra Wideband (UWB) supportTemperature sensing (0.01˚ accuracy) Natural language commands and dictation (talking mode) Ultra Wideband (UWB) support
Battery
ChargingWireless, 0-80% in 60 minWireless, 0-80% in 45 min
TypeLi-Ion 542 mAhLi-Ion 308 mAh
Misc
ColorsTitaniumMidnight, Starlight, Silver, Red
ModelsA2684, A2622, A2859, watch6,18A2773, A2775, A2772, A2774, A2857, A2858, A2770, A2771, watch6,14, watch6,15, watch6,16, watch6,17
PriceAbout 550 EURAbout 340 EUR
SAR-0.31 W/kg (head)     0.55 W/kg (body)
SAR EU0.35 W/kg (head)     0.60 W/kg (body)0.31 W/kg (head)     0.55 W/kg (body)
Camera
 NoNo

Apple Watch Ultra

  • Extremely durable titanium case
  • Larger, brighter display
  • Significantly longer battery life
  • Enhanced GPS and navigation features
  • Depth gauge and water resistance to 100m

  • Higher price
  • Larger size may not suit all wrists
  • More rugged design may be less aesthetically pleasing to some

Apple Watch Series 8 Aluminum

  • More affordable
  • Sleek and stylish aluminum design
  • Faster charging (0-80% in 45 min)
  • Comprehensive health tracking features
  • Available in multiple sizes and finishes

  • Shorter battery life
  • Less durable than the Ultra
  • Smaller display

Display Comparison

The Ultra features a significantly larger 49mm titanium case and a brighter, more durable flat sapphire crystal display, offering exceptional visibility even in direct sunlight. The Series 8 Aluminum has a smaller 41mm or 45mm aluminum case with a standard ion-X glass display. While the Series 8 display is vibrant, the Ultra's is noticeably more robust and easier to read outdoors.

Camera Comparison

Neither watch has a camera. This remains a consistent feature across Apple Watch models.

Performance

Both watches share the Apple S8 SiP, meaning core performance is very similar for everyday tasks and app usage. However, the Ultra's larger size and more robust build might allow for slightly better thermal management during prolonged intensive use, though this is unlikely to be a significant difference for most users.

Battery Life

The Ultra boasts a significantly larger battery, offering up to 36 hours of battery life with normal use and up to 60 hours in Low Power Mode. The Series 8 provides up to 18 hours of battery life. This is a major advantage for the Ultra, especially for multi-day adventures.

Buying Guide

The Apple Watch Ultra is ideal for serious athletes, outdoor enthusiasts, and those who demand maximum durability. The Apple Watch Series 8 Aluminum is perfect for everyday use, fitness tracking, and those who appreciate a sleek design and faster charging without the Ultra's premium price.

Frequently Asked Questions

❓ Is the Apple Watch Ultra worth the extra cost?
If you're a serious athlete or adventurer who needs a rugged, long-lasting smartwatch with advanced features, then yes. Otherwise, the Series 8 offers excellent value for everyday use.
❓ Can the Apple Watch Series 8 be used for swimming?
Yes, the Series 8 is water-resistant to 50 meters and suitable for swimming. The Ultra is water-resistant to 100 meters and includes a depth gauge, making it better suited for diving.