You can still use all of the regular features of this Apple Watch even if you opt out of the AT&T data plan.
Brad's Deals Editor Michael,
The Nike+ edition of the Apple Watch Series 3 (GPS + Cellular) drops from $399.99 to $319.20 when you apply the code 20SUMMER in your cart at Nike. Plus the shipping is free. This is the best price we could find for the cellular-capable version of the Apple Watch Series 3 by $65. With the addition of a $10 per-month AT&T data plan, you can make and receive calls and text messages without syncing the watch to your phone. The Nike+ edition comes pre-installed with the Nike+ Run Club app, exclusive watch faces, and features a one-size-fits-all breathable band. Sales tax is charged in most states.