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The Apple Watch Series 11 is Apple's latest smartwatch, featuring a ton of health-tracking features, fall and crash detection, and up to a 24-hour battery life. And right now at T-Mobile, you can save $300 on one when you add a new watch line to your mobile plan -- getting you our pick for the best Apple Watch with a cellular plan for $199, saving you 60% off the regular price of $499.

Also: Apple Watch Series 11 review 

Of course, carrier discounts like this come with some caveats: In this case, you'll purchase the new Apple Watch Series 11 42mm on a monthly payment plan and pay the applicable sales tax on the pre-credit price at the time of purchase. You'll also add a new line on Watch Plan Plus. You'll get paid up to $300 back via 24 monthly bill credits. If you cancel your account before the 24 months is up, the credits will stop, and the remaining balance on all devices at full price will be due. The bill credits also end if you pay off your watch early. 

The new line and wearable service plan start at $15 per month when you sign up for AutoPay, plus taxes and fees, and there's a $35 device connection charge. 

Also: Apple Watch Series 11 vs. Samsung Galaxy Watch 8 

The 42mm watch face uses Apple's Retina Display technology for bold colors, crisp text and details, and sharp contrast. It has a max brightness of 2,000 nits for better visibility in bright rooms and direct sunlight, and the case is water-resistant to 50 meters. This means that you won't have to worry about splashes or a little rain ruining your new smartwatch. 

Powered by the new S10 chip, the Apple Watch Series 11 offers faster, more efficient multitasking than previous generations as well as support for gesture and voice inputs for truly hands-free use. With support for 5G, Wi-Fi, and GPS connectivity, the Series 11 is a nearly perfect companion for workouts, commutes, and camping trips. It also supports fall and crash detection as well as emergency calling to keep you in touch with rescue teams, friends, and family in case of disaster.

How I rated this deal 

Getting a brand new Apple Watch Series 11 for $300 off sounds too good to be true, but it is (at least if you don't mind getting paid back the money via monthly bill credits). With an improved battery, display, and connectivity options, you'll be able to track workouts, reach health goals, make calls, and stream music. Gesture and voice inputs mean you get total hands-free control, making it a nearly perfect companion for workouts and busy professionals. That's why I gave this deal a 5/5 Editor's rating.