Apple Watch Ultra 3 vs Apple Watch Series 6 GPS comparison

Compare Apple Watch Ultra 3
Compare Apple Watch Series 6 GPS
key specs
Display Size49mm40mm
Compatible OSiOS 26-
Dial ShapeSquareRectangle
Display TypeOLED RetinaOLED Retina
Ideal ForUnisexUnisex
Strap Colour-Silver, Gold, Space Grey, Pink, Blue, Red, Brown
general
BrandAppleApple
ModelWatch Ultra 3Watch Series 6 GPS
Release dateSeptember 9, 2025September 16, 2020
Model NameWatch Ultra 3Watch Series 6 GPS
Dial ColourNatural, BlackSilver, Grey, Gold, Blue, PRODUCT RED
Dial ShapeSquareRectangle
SizeLargeRegular
TouchscreenYesYes
Interchangeable StrapYes-
Water ResistantWR100Yes
Water Resistance Depth10050m
Dial MaterialTitaniumAluminium, Stainless Steel, Titanium
Ideal ForUnisexUnisex
Usage-Fitness & Outdoor
Strap Colour-Silver, Gold, Space Grey, Pink, Blue, Red, Brown
dimensions
Width44-
Height49-
Thickness12-
Weight (g)61.60-
product details
Compatible DeviceiPhone 11 and above-
Battery LifeUp to 24 hoursUp to 18 hours
Charger TypeWireless-
Sensor-Compass, Always-On Altimeter, second-gen optical heart rate sensor, Accelerometer, Gyroscope, and Ambient light sensor
Notification-Yes
Battery Type-Lithium Ion
Rechargeable Battery-Yes
connectivity features
Call FunctionYesNo
BluetoothYesYes
Bluetooth Version5.35.0
Wi-FiYesYes
GPSYesYes
Messaging SupportYes-
Other Connectivity FeaturesSatellite Emergency SoS-
platform and storage features
Operating SystemwatchOS 26watchOS 7
Compatible Operating SystemiOS 26-
Processor NameApple S11S6 with 64-bit Dual Core Processor
Internal Memory64GB32GB
Number of Cores-dual-core
camera and display features
Display Size49mm40mm
Display TypeOLED RetinaOLED Retina
Other Display FeaturesAlways-On DisplayLTPO OLED Always-On Retina display (1000 nits brightness)
Display Resolution-324x394 pixels
Backlight Display-Yes
fitness and watch functions
Step CountYesYes
Calorie CountYesYes
Heart Rate MonitorYesYes
CompassYesYes
CalendarYesYes
Alarm ClockYesYes
Date & Time DisplayYesYes
Number of Buttons3-
Altimeter-Yes
Language-English
Other Fitness Features-Blood Oxgen Sensor, ECG sensor
audio and video features
SpeakerYesYes
Gesture ControlYes-
MicrophoneYesYes
Voice ControlYes-
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