Request a product

Apple Watch Series 9 vs Apple Watch Ultra

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

AppleWatch Series 9AppleWatch Ultra
Overview
ReleasedSeptember 2023September 2022
Display
Case sizes41 mm or 45 mm49 mm
PanelLTPO OLEDLTPO OLED
Peak brightness2,000 nits2,000 nits
Always-on displayYesYes
Display detailAlways-On Retina LTPO OLED display, edge to edge; 326 ppi; up to 2,000 nits maximum and 1 nit minimum brightnessLTPO2 OLED Always-On Retina display; 410 x 502 pixels; 1,185 sq mm display area; Night Mode on the Wayfinder face
Screen protectionIon-X front glass (aluminium cases); sapphire front crystal (stainless steel cases)Flat sapphire front crystal, with the case raised around its edges
Health and fitness
ECGYesYes
Blood oxygenYesYes
Skin temperatureYesYes
Sleep apnoea alertsYesNo
High blood pressure alertsYesNo
Body compositionNoNo
Fall detectionYesYes
Crash detectionYesYes
GPSSingle-bandDual-band (L1 and L5)
Water resistance50 m100 m
SensorsElectrical heart sensor; third-generation optical heart sensor; temperature sensing; compass; always-on altimeter; high-g accelerometer; high dynamic range gyroscope; ambient light sensorElectrical heart sensor (ECG app); blood oxygen sensor; third-generation optical heart sensor; temperature sensing with a two-sensor design; compass; always-on altimeter; high-g accelerometer (up to 256 g-forces); high dynamic range gyroscope; ambient light sensor; water temperature sensor; depth gauge
Health featuresECG app; Blood Oxygen app; sleep apnoea notifications and hypertension notifications (added in later watchOS updates); irregular rhythm notifications; high and low heart rate notifications; sleep stages; Cycle Tracking with retrospective ovulation estimates; Medications; Mindfulness; NoiseECG app; Blood Oxygen app; irregular rhythm notifications; temperature sensing for retrospective ovulation estimates in Cycle Tracking
Fitness featuresCustom interval workouts; Heart Rate Zones; Race Route; stride length, ground contact time and vertical oscillation; automatic track detection; multisport workouts; Backtrack; pool and open-water swimming with SWOLF and automatic stroke detection; cycling Functional Threshold Power, power zones and cadence with Bluetooth accessories; GymKitDepth app and recreational diving to 40 m with the Oceanic+ app; Backtrack; Compass Waypoints; Action button for workouts, segments and waypoints; GymKit
Safety featuresEmergency SOS; international emergency calling; Crash Detection; Fall DetectionEmergency SOS; international emergency calling; Fall Detection; Crash Detection; 86 dB emergency siren
Battery and connections
Battery life (maker's claim)Up to 18 hoursUp to 36 hours
In low-power modeUp to 36 hours–
Mobile data optionYesYes
Works withiPhoneiPhone
ChipS9S8
Storage64 GB32 GB
Battery life detailBuilt-in rechargeable lithium-ion batteryUp to 36 hours of normal use; up to 18 hours on LTE
ChargingFast charging to 80% in about 45 minutesApple Watch Magnetic Fast Charger to USB-C Cable
ConnectivityL1 GPS, GNSS, Galileo and BeiDou; 4G LTE and UMTS (GPS + Cellular models); Wi-Fi 4 (802.11n); Bluetooth 5.3; second-generation Ultra Wideband chip with Precision Finding for iPhone 15 and later; Apple Pay4G LTE and UMTS; Wi-Fi 802.11b/g/n at 2.4 GHz and 5 GHz; Bluetooth 5.3; W3 wireless chip; U1 chip (Ultra Wideband); L1 and L5 GPS with GLONASS, Galileo, QZSS and BeiDou; Apple Pay
Storage–32GB
Design
Weight (lightest version)31.9 g61.3 g
SoftwarewatchOSwatchOS
Case materialsAluminium or stainless steel case; water resistant to 50 m (swimproof); IP6X dust resistantAerospace-grade natural titanium case; ceramic and sapphire crystal back; water resistant to 100 m (ISO 22810); IP6X dust resistant; tested to MIL-STD 810H; on-wrist operating temperature from -20°C to 55°C
Size41mm is 41 x 35 x 10.7 mm, 31.9 g (aluminium, GPS), 32.1 g (aluminium, GPS + Cellular) or 42.3 g (stainless steel); 45mm is 45 x 38 x 10.7 mm, 38.7 g (aluminium, GPS), 39.0 g (aluminium, GPS + Cellular) or 51.5 g (stainless steel); lightest is the 41mm aluminium GPS49 x 44 x 12 mm; 61.3 g
BandsFits 130–200 mm wrists (41mm) or 140–245 mm wrists (45mm)Alpine Loop, Trail Loop and Ocean Band
ColoursAluminium in Pink, Midnight, Starlight, Silver and (PRODUCT)RED; stainless steel in Gold, Silver and GraphiteNatural titanium
In the boxApple Watch Series 9, strap, Apple Watch Magnetic Fast Charger to USB-C Cable (1 m)Apple Watch Ultra, band or loop, Apple Watch Magnetic Fast Charger to USB-C Cable (1 m)

More comparisons