Amazon.com: Apple Watch Series 6 (GPS + Cellular, 44mm 。Apple Watch Series 6 (GPS + Cellular) 40mm Aluminum Case with Pink Sand Sport Band - Gold In good, used condition. Works with any Apple carrier. Comes with screen protector. GPS + Cellular model lets you call, text, and get directions without your phone³ Measure your blood oxygen with an all-new sensor and app¹ Check your heart rhythm with the ECG app² 5GHz Wi-Fi and U1 Ultra Wideband chip Track your daily activity on Apple Watch and see your trends in the Fitness app on iPhone Measure workouts like running, walking, cycling, yoga, swimming, and dance Swimproof design⁴ ⁴ISO standard 22810:2010. Appropriate for shallow-water activities like swimming. Sync and stream music, podcasts, and audiobooks⁵ ⁵Audio streaming requires an Apple Watch (GPS + Cellular) Series 3 or later. Pay instantly and securely from your wrist with Apple Pay Set up an Apple Watch for family members who don’t have an iPhone using Family Setup⁶ High and low heart rate notifications and irregular heart rhythm notification² Built-in compass and real-time elevation readings Can detect if you’ve taken a hard fall, then automatically call emergency services for you Emergency SOS lets you get help from your wrist⁷ International emergency calling from your watch⁸ watchOS 7 with sleep tracking, cycling directions, updates to Siri, and new customizable watch faces Apple Watch Series 6 requires an iPhone 6s or later with iOS 14 or later.