Hosted by site sponsor WebMate.







Apple Watch Series 4 (Aluminum, GPS, 44 mm) Specs

Identifiers: Watch Series 4 44 mm - MU6A2LL/A** - Watch4,2 - A1978* - 3229*

All Apple Watch Models


Apple Watch Series 4, GPS, 44 mmThe Apple Watch Series 4 models look similar to earlier models, but have larger displays, more advanced input capabilities, more powerful internals, and more advanced sensors (most notably a new accelerometer and gyroscope that can detect falls and an electrical heart sensor).

This particular model, the Apple Watch Series 4 (Aluminum, GPS, 44 mm) does not have wireless cellular capability, but higher-end models in the series also are capable of being connected to the Internet without a "tethered" iPhone. This "GPS" model is required to be connected to an iPhone 5s or newer running iOS 12 or later for most functionality.

All Apple Watch Series 4 devices are controlled with a Digital Crown with haptic feedback and a Force Touch capable display. This particular Apple Watch Series 4, the GPS model in the 44 mm size, features a 368x448 LTPO OLED screen with "strengthened, lightweight Ion-X glass" packed in a 7000 series anodized aluminum housing with an "all ceramic and sapphire crystal back" that connects to the charger.

Battery life is an Apple estimated "up to 18 hours" overall, but more specifically "up to 2 hours" of talk time connected to an iPhone, "up to 10 hours" of audio playback from Apple Watch storage, "up to 10 hours" working out indoors and "up to 6 hours" working out outdoors with GPS.

There are six different options for this particular Apple Watch Series 4 model. Options include a silver colored aluminum case with a white fluoroelastomer rubber "Sport Band" or "Seashell" gray fabric "Sport Loop" (pictured, right); a gold colored aluminum case with a "Pink Sand" fluoroelastomer rubber "Sport Band" or "Pink Sand" fabric "Sport Loop"; or a dark "Space Gray" colored aluminum case and a black fluoroelastomer rubber "Sport Band" (pictured, left) or black fabric "Sport Loop."

Also see:

  • What are all the differences between the Apple Watch Series 4 models?
  • What are the differences between the Apple Watch Series 4 and earlier models?

Buy This Watch or Trade-In Yours at site sponsor OWC. Click for current options.

Sell This Watch at A+ BBB rated site sponsor Cash For Your Mac. Quick quote!

Headphones for This Watch from site sponsor OWC. Wireless options.



  • Tech Specs
  • Global Original Prices
  • Popular Q&As

Click on a category for related details. The most commonly needed info is "open" by default, but all info is important.


September 12, 2018* September 10, 2019
Details: The "Introduction Date" refers to the date a model was introduced via press release. The "Discontinued Date" refers to the date a model either was replaced by a subsequent system or production otherwise ended.

*This model was introduced on September 12, 2018, was available for pre-order on September 14, 2018, and first was available in stores on September 21, 2018.
N/A Apple S4*
Details: *Apple reports that the processor in the Apple Watch Series 4 models is a 64-bit dual core Apple "S4" processor. The clockspeed is unspecified.
1 GB* 8 GB
Details: All Apple Watch Series 4 models have 16 GB of internal flash storage regardless of wireless capability.
N/A N/A
Details: *Apple does not provide an estimate of song and photo capacity instead opting just for GB.
Watch Apple Watch Series 4 (44 mm)
Details: This Apple Watch Series 4 has a 44 mm form factor and uses a 7000 series anodized aluminum housing.
Aluminum* Digital Crown
Details: *This Apple Watch Series 4 model uses a 7000 series anodized aluminum housing. It is available in silver, gold, and dark "space gray" aluminum housing options.
2.0" OLED* 368x448
Details: *The face of the 44 mm Apple Watch Series 4 contains a roughly 2.0" (368x448) LTPO OLED "Retina" display with Force Touch capability. It has rounded corners and a 977 square mm display area. It has a brightness of 1000 nits. This Apple Watch Series 4 display, and all others with aluminum cases, is covered by scratch-resistant Ion-X glass.
802.11b/g/n 2.4 GHz 5.0
Details: All Apple Watch Series 4 models have built-in support for 802.11b/g/n 2.4 GHz and Bluetooth 5.0. This specific model also has GPS (as well as GLONASS, Galileo, and QZSS) support, but not cellular capability.
Lithium Ion* 2-18 Hours*
Details: *The Apple Watch Series 4 uses a built-in, proprietary Lithium Ion battery. Apple reports that this GPS-only device provides "up to 18 hours" of battery life which includes "90 time checks, 90 notifications, 45 minutes of app use and a 60 minute workout with music playback from Apple Watch via Bluetooth over the course of 18 hours." Battery life for other uses varies -- reportedly "up to 2 hours" of talk time connected to an iPhone, "up to 10 hours" of audio playback from Apple Watch storage, "up to 10 hours" of working out indoors, and "up to 6 hours" of working out outdoors with GPS.
MU6A2LL/A** Watch Series 4 44 mm
Details: *Apple estimates that the Apple Watch Series 4 models completely charge in "about 2 hours" and charge to 80% capacity in "about 1.5 hours."

**For 44 mm models, MU6A2LL/A is the order number for the silver colored aluminum case with a white fluoroelastomer rubber "Sport Band." With a silver colored aluminum case and a "Seashell" gray fabric "Sport Loop," the order number is MU6C2LL/A. The gold colored aluminum case with a "Pink Sand" fluoroelastomer rubber "Sport Band" and "Pink Sand" fabric "Sport Loop" are MU6F2LL/A and MU6G2LL/A, respectively. Finally, with a dark "Space Gray" colored aluminum case and a black fluoroelastomer rubber "Sport Band" or black fabric "Sport Loop," are MU6D2LL/A and MU6E2LL/A, respectively.
A1978* (EMC 3229*) Watch4,2
Details: Please note that these identifiers refer to more than one model.

Also see: All Apple Watch models with the A1978* Model Number, the 3229* EMC Number, and the Watch4,2 Model Identifier.
watchOS 5.0 (16R364) watchOS 10.x
Details: This Apple Watch fully supports the last version of watchOS 5 and watchOS 6. It supports the final version of watchOS 7 and watchOS 8, but not all features are available. It additionally supports watchOS 9, but it does not include Apple Watch Mirroring or the expanded global keyboard options.

Finally, this model supports watchOS 10, but it does not measure time in daylight. It does not support watchOS 11 or later versions of the operating system.

watchOS 6 also requires an iPhone 6s or later running iOS 13 or later, watchOS 7 also requires an iPhone 6s or later running iOS 14 or later, watchOS 8 also requires an iPhone 6s or later running iOS 15 or later, watchOS 9 also requires an iPhone 8 or later running iOS 16 or later, and watchOS 10 also requires an iPhone XS or iPhone XR or later running iOS 17 or later.
1.73 x 1.50 x 0.42 1.4 ounces
Details: In inches - height by width by depth (44 mm x 38 mm x 10.7 mm, 36.7 grams).
US$429* US$125-US$200
Details: *All 44 mm Apple Watch Series 4 (GPS-only) models originally were US$429 regardless of finish and included band.

Please note that on average the estimated current retail pricing of used devices is updated twice a year (please refer to the date on the bottom of the page for the date last updated).

Photo Credit: Apple, Inc.



Global original prices for the Apple Watch Series 4 (Aluminum, GPS, 44 mm) in 34 different countries and territories follow; organized alphabetically by region.

For global original prices for all Apple Watch models in one particular country on a single page, please refer to Everyi.com's Global Original Prices section.

Original Prices - North & South America

C$559 R$4.199
MXN $10,199 US$429*

Original Prices - Europe

€459 €459
DKK 3,599 €469
€459 €459
€469 €469
€443,83 €459
NOK 4,690 €469
€459 SEK 5.195
CHF 479 £429

Original Prices - Asia

RMB 3,499 HK$3,399
Rs 43,900 Rp 8,500,000
¥48,800 KRW 539,000
RM 1,899 PHP 26,990
S$649 NT$13,900
THB 15,400 VND 13,990,000

Original Prices - Australia & New Zealand

A$649 NZ$749

If you have additional original prices for this model, please get in touch. Thank you.


Ten of the most popular Q&As about the Apple Watch line follow.



Permalink | Report an Error/Typo | Sign Up for Site Update Notices



<< Apple Watch (Home) | Also see: Apple Watch FAQ




Established in 1996, EveryMac.com has been created by experts with decades of experience with Apple hardware. EveryMac.com includes, and always has included, original research incorporating detailed, hands-on inspection of packaging, computers, and devices as well as extensive real-world use. All information is provided in good faith, but no website or person is perfect. Accordingly, EveryMac.com is provided "as is" without warranty of any kind whatsoever. EveryMac.com, and the authors thereof, shall not be held responsible or liable, under any circumstances, for any damages resulting from the use or inability to use the information within. For complete disclaimer and copyright information please read and understand the Terms of Use and the Privacy Policy before using EveryMac.com. Copying, scraping, or use of any content without expressed permission is not allowed, although links to any page are welcomed and appreciated.