Watch Series 3 38 mm

While visually similar to its predecessors, the Apple Watch Series 3 offered significant internal upgrades. This specific model, the Apple Watch Series 3 (Aluminum, GPS, 38 mm), lacks cellular capability but includes built-in GPS, GLONASS, a barometric altimeter, and Siri support, requiring connection to an iPhone 5s or newer. It is controlled via a "Digital Crown" and a Force Touch display. This 38 mm version features a 272x340 OLED screen with Ion-X glass in an aluminum case with a composite back. Battery life is rated for up to 18 hours. Initially, four configurations were available. On September 12, 2018, Apple reduced the options to two and lowered the price. The price was cut again on September 10, 2019, before the model was finally discontinued on September 7, 2022.

The Apple Watch Series 3 GPS model was widely regarded as an excellent entry-level option that provided core Apple Watch functionality at an accessible price point. Reviewers consistently praised the improved processor performance and the addition of GLONASS for enhanced location accuracy, though noted the lack of cellular connectivity limited its independence. The device was particularly well-suited for casual fitness tracking and smart notifications, with many reviews highlighting its reliability for basic health monitoring. Critics appreciated Apple's periodic price reductions, which made it increasingly attractive as a budget option. While it lacked the advanced features of higher-tier models, the Series 3 GPS was considered ideal for first-time smartwatch users or those who didn't require cellular connectivity. Its long production run and multiple price drops demonstrated its success as an affordable gateway into the Apple Watch ecosystem.