The device, which starts at $369, is designed for active users who want to track their activity, distance traveled, and the weather. The band was created in partnership with Nike, which is supplying software in addition to the Apple-developed operating system that comes with the device.

The watch, initially unveiled at an event in San Francisco last month, is available in 38mm and 42mm case sizes, and comes in a variety of colors. In addition to Nike’s software, the watch is compatible with Apple’s watchOS 3 and all the apps that run on the Apple Watch.

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To get the most out of the Apple Watch Nike+, users will need to wirelessly tether it to an iPhone, allowing users to receive notifications and other updates. However, the Apple Watch Nike+ can be used autonomously for exercise and using apps.

Apple unveiled its co-branded watch with Nike, a leading brand in the fitness market, to appeal to customers who want more specialized exercise tracking compared to the standard model. The watch is intended to compete against the likes of Fitbit, Jawbone, and Samsung, which all offer fitness trackers that double as smartwatches.

In addition to unveiling the Apple Watch Nike+ last month, Apple also showed off an updated version of its original Apple Watch. That new device, Apple Watch Series 2, comes with a faster processor than its predecessor, built-in GPS, and water-resistance. It runs on Apple’s new watchOS 3.The Apple Watch Series 2, which is already available, starts at $369.

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While Apple is still selling its Series 1 watch, the Nike+ is a Series 2. That means it comes with exercise-friendly features like a brighter screen and swimming support thanks to its water-resistance.