Geek Squad® Certified Refurbished products are thoroughly, painstakingly and lovingly tested, so you can be sure that your device will work right, right away. Learn more about Geek Squad Certified Refurbished Apple Watch Nike+ Series 4 (GPS) 40mm Aluminum Case with Black Nike Sport Loop: Track your runs with GPS and altimeter. Pair your watch with compatible gym equipment. Apple Watch Nike+ is swimproof¹, so you can take a post-run dip in the pool. You can make phone calls, send messages, and get notifications. Train with Audio Guided Runs. And listen to Apple Music² and Apple Podcasts. Apple Watch Series 4 lets you do it all right from your wrist. There are new Nike watch faces and two Nike bands: the Nike Sport Band with compression-molded perforations for breathability and the Nike Sport Loop that is woven with a special reflective thread.