Overview

  • GPS
  • Over 30% larger display²
  • Electrical and optical heart sensors
  • Digital Crown with haptic feedback
  • 50% louder speaker²
  • S4 SiP with faster 64-bit dual-core processor
  • Improved accelerometer and gyroscope for fall detection
  • Swimproof³
  • watchOS 5
  • Aluminum case
  • Apple Watch Series 4 (GPS) requires an iPhone 5s or later with iOS 12 or later
  • ¹ Apple Music requires a subscription.
  • ² Compared with the previous generation.
  • ³ ISO standard 22810:2010. Appropriate for shallow-water activities such as swimming. Submersion below shallow depth and high-velocity water activities not recommended.

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Specifications

Capacity & configuration

Band Type
Sport Band
Display Type
OLED
Alert Type
Vibration
Replaceable Battery
No

Dimensions & weight

Product Name
Apple Watch Series 4 (GPS) 44mm Silver Aluminum Case with White Sport Band
Maximum Depth of Water Resistance
164 feet
Product Height
1.73 inches
Product Width
2.20 inches
Product Weight
1.29 ounces
Product Length
0.42 inches
Product Type
Smartwatch

Features

Brand
Apple
Color
Silver Aluminum
Case Size
44mm
Case Shape
Rectangular
Case Thickness
0.42 inches
Band Color
White
Display Screen
Yes
Screen Size
44 millimeters
Touch Screen
Yes
Screen Resolution
368 x 448
Color Display
Yes
Backlit Display
Yes
Adjustable Brightness
Yes
Screen Material
Ion-X Glass
Operating System Compatibility
Apple iOS
Operating System
watchOS
Voice Assistant Built-in
Siri
Data Plan Required
Yes
Bluetooth Version
5.0
Wireless Connectivity
Bluetooth
Wireless Standard
N
Built-in Storage
16 gigabytes
GPS Enabled
Yes
Global Positioning
GPS
Usage Time
18 hours
Mobile Payment Service Supported
Apple Pay
Music Player
Yes
Built-In Microphone
Yes
Voice Activated
Yes
Metrics Measured
Cadence
Multi-Sport Tracking
Yes
Sensors
Accelerometer
Protective Qualities
Water resistant
Minimum Wrist Size
139.95 millimeters
Maximum Wrist Size
210.06 millimeters
Band Size
Adjustable
Rechargeable
Yes
Charging Interface(s)
Wireless
Battery Chemistry
Lithium-ion
Band Material
Fluoroelastomer
Case Material
Aluminum
Case Back Material
Sapphire crystal and ceramic
Form Factor
Wristwatch
Year of Release
2018
UPC
400063229712

Power & warranty

Model Number
REF-MU6A2LL/A
Model Family
Apple Watch Series 4
Warranty - Parts
90 days
Warranty - Labor
90 Days

Warranty & protection

Included manufacturer warranty

See manufacturer documentation.

Register your product with the manufacturer within 30 days of delivery.

Warranty service

Manufacturer warranty claims are handled by the manufacturer. We are happy to help you find the right contact: (888) 419-6820.

Customer reviews

Write a review
LexTheFlexNov 7, 2025 · Verified purchase ★★★★★

apple watch - good quality and very clean product. the band didn't really fit but its easy to replace.

KokaJun 16, 2025 · Verified purchase ★★★★☆

Geek Squad Certified with Good Battery Health - The Apple Watch is a great blend of style and functionality. It tracks fitness accurately, delivers notifications instantly, and integrates seamlessly with my iPhone. The battery life is good, and features like heart rate monitoring and Apple Pay are incredibly convenient. A great everyday companion—highly recommended!

pmohanDec 30, 2021 · Verified purchase ★★★★☆

Apple Watch series 4 - This is a very good watch as long as your expectations arent extravagant. Theres plenty of faces to choose from, so I was able to find one that I really liked. The features all work as they should, and its very nice to get notifications on your wrist without having to pull your phone out. Sometimes the GPS tracking is a little off as far as elevation is concerned, but thats not a huge deal. I normally get about one day of battery life out of it, with light use I could probably get two, but I just charged every night. I will definitely recommend this product

TheGirlInBlueMay 10, 2021 · Verified purchase ★★★★★

Great as always - Love the larger screen and the ability to be in the water with it.

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Questions & answers

Ask a question

Email [email protected] or call (888) 419-6820 during business hours.

Free U.S. shippingOn every order. Leaves our store in 1–2 business days, arrives in 3–5 business days.
Free returns for 30 daysNo restocking fee. We email you a prepaid return label.
We can install it tooOptional in-home delivery, installation and haul-away on large appliances.
Talk to our team(888) 419-6820 · Mon–Sat