T-Mobile wasn’t ready to spill its launch date for the Galaxy Watch when the new wearable was announced earlier this month, but now some of that information has come out.

Samsung is now taking pre-orders for the T-Mobile versions of the Galaxy Watch. The 42mm version is available in Rose Gold and is priced at $379.99, while the 46mm model comes in Silver and is priced at $399.99. Pre-orders are expected to ship the week of September 2nd.

These watches include support for T-Mobile’s cellular network. Specifically, Samsung says that they support Bands 2, 4, 5, 12, 13, 25, 26, and 66. Their spec lists also include 1.15GHz Exynos 9110 processors, 1.5GB of RAM, 4GB of internal storage, and Tizen 4.0. There’s a heart rate tracker and ambient light sensor in each model, too, along with IP68 water and dust resistance and NFC (but no MST) for Samsung Pay.

There are a few differences between the two versions that are worth mentioning. The 42mm model is equipped with a 1.2-inch 360×360 round Super AMOLED screen, 20mm strap, and 270mAh battery, while the 46mm version has a 1.3-inch 360×360 round Super AMOLED display, 22mm strap, and 472mAh battery.

Both watches are compatible with Android and iOS devices. On Android, you’ll need a phone running 5.0 Lollipop or later, while iOS users will need an iPhone 5 or later running iOS 9 or later.

There’s still no word on when T-Mobile will begin selling the Galaxy Watches, but Samsung has at least given us an idea of when they’ll arrive. Whenever the Galaxy Watches are released by T-Mo, the 42mm will cost $15 per month for 24 months ($375 full retail) while the 46mm will cost $16 per month for 24 months ($400 full retail). Customers who buy a Galaxy Watch on EIP can get a second for half off with 24 monthly bill credits and a new line.

Sources: Samsung (1), (2)