Apple Watch Series 6 vs Apple Watch Series 7

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

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Watch Series 6 compared with Watch Series 7

	AppleWatch Series 6	AppleWatch Series 7
Overview
Released
Released	September 2020	October 2021
Display
Case sizes
Case sizes	40 mm or 44 mm	41 mm or 45 mm
Panel
Panel	LTPO OLED	LTPO OLED
Peak brightness
Peak brightness	1,000 nits	1,000 nits
Always-on display
Always-on display	Yes	Yes
Display detail
Display detail	Always-On Retina LTPO OLED; 40mm 324 x 394 pixels and 759 sq mm; 44mm 368 x 448 pixels and 977 sq mm; wrist-down outdoor brightness up to 2.5 times Series 5	41mm 352 x 430 pixels, 904 sq mm; 45mm 396 x 484 pixels, 1143 sq mm; 1.7 mm borders; QWERTY keyboard with QuickPath; wrist-down brightness indoors up to 70% higher than Series 6
Screen protection
Screen protection	–	Redesigned front crystal over 50% thicker than Series 6, according to Apple's launch announcement
Health and fitness
ECG
ECG	Yes	Yes
Blood oxygen
Blood oxygen	Yes	Yes
Skin temperature
Skin temperature	No	No
Sleep apnoea alerts
Sleep apnoea alerts	No	No
High blood pressure alerts
High blood pressure alerts	No	No
Body composition
Body composition	No	No
Fall detection
Fall detection	Yes	Yes
Crash detection
Crash detection	No	No
GPS
GPS	Single-band	Single-band
Water resistance
Water resistance	50 m	50 m
Sensors
Sensors	Blood oxygen sensor; electrical and third-generation optical heart sensors; compass, always-on altimeter, accelerometer up to 32 g-forces, gyroscope and ambient light sensor	Electrical and third-generation optical heart sensors, blood oxygen sensor, compass, always-on altimeter, accelerometer up to 32 g-forces, gyroscope and ambient light sensor
Health features
Health features	ECG and Blood Oxygen apps, irregular-rhythm notifications; sleep tracking and automatic handwashing detection in watchOS 7; oxygen readings are for general wellness rather than medical use	ECG and Blood Oxygen apps; watchOS 8 adds sleeping respiratory rate and Mindfulness; oxygen measurements are for general wellness rather than medical use
Fitness features
Fitness features	GPS/GNSS and GymKit; always-on elevation tracking; dance, core training, functional strength training and cooldown workouts in watchOS 7	GPS, GLONASS, Galileo, QZSS and BeiDou; GymKit; Tai Chi and Pilates workouts; cycling start reminders and auto-pause
Safety features
Safety features	Fall detection and Emergency SOS; international emergency calling on cellular versions in supported regions	Fall detection and Emergency SOS; international emergency calling on cellular versions in supported regions
Battery and connections
Battery life (maker's claim)
Battery life (maker's claim)	Up to 18 hours	Up to 18 hours
Mobile data option
Mobile data option	Yes	Yes
Works with
Works with	iPhone	iPhone
Chip
Chip	S6	S7
Storage
Storage	32 GB	32 GB
Battery life detail
Battery life detail	Built-in rechargeable lithium-ion battery	Built-in rechargeable lithium-ion battery
Charging
Charging	1 m magnetic charging cable; full charge in under 1.5 hours, according to Apple's launch announcement	1 m Magnetic Fast Charger to USB-C Cable; up to 33% faster charging than Series 6; USB-C power adapter required
Connectivity
Connectivity	W3 wireless chip and U1 Ultra Wideband chip; Wi-Fi 802.11b/g/n at 2.4GHz and 5GHz; Bluetooth 5.0; cellular versions add LTE and UMTS; requires iPhone 6s or later with iOS 14 at launch	W3 wireless chip and U1 Ultra Wideband; Wi-Fi 802.11b/g/n at 2.4GHz and 5GHz; Bluetooth 5.0; cellular versions add LTE and UMTS; iPhone 6s or later with iOS 15 at launch
Design
Weight (lightest version)
Weight (lightest version)	30.5 g (better)	32 g
Software
Software	watchOS	watchOS
Case materials
Case materials	Aluminium, stainless steel or titanium; ceramic and sapphire crystal back; 50 m rating under ISO 22810:2010 for shallow-water swimming	Aluminium, stainless steel or titanium; ceramic and sapphire crystal back; IP6X dust resistance; WR50 water resistance for shallow-water swimming
Size
Size	40mm 40 x 34 x 10.7 mm, aluminium 30.5 g, steel 39.7 g or titanium 34.6 g; 44mm 44 x 38 x 10.7 mm, aluminium 36.5 g, steel 47.1 g or titanium 41.3 g; case weights exclude bands	41mm 41 x 35 x 10.7 mm, aluminium 32 g, steel 42.3 g or titanium 37 g; 45mm 45 x 38 x 10.7 mm, aluminium 38.8 g, steel 51.5 g or titanium 45.1 g; case weights exclude bands
Bands
Bands	Apple Watch Studio offers case and band choices; Solo Loop and Braided Solo Loop introduced with Series 6; Nike and Hermès bands and faces also offered	Apple Watch Studio case and band combinations; Solo Loop and Braided Solo Loop; Nike and Hermès editions with exclusive bands and faces; compatible with earlier Apple Watch bands
Colours
Colours	Silver, Space Grey, Gold, Blue or (PRODUCT)RED aluminium; Silver, Graphite or Gold stainless steel; natural or Space Black (DLC) titanium; Nike Silver or Space Grey; Hermès steel or Space Black steel	Midnight, Starlight, Green, Blue or (PRODUCT)RED aluminium; Silver, Graphite (PVD) or Gold (PVD) steel; natural or Space Black (DLC) titanium; Nike Midnight or Starlight; Hermès Silver or Space Black (DLC) steel
In the box
In the box	Watch, band or loop and 1 m magnetic charging cable; no USB power adapter	Watch, band or loop and 1 m Magnetic Fast Charger to USB-C Cable