Band fits 140-210mm wristsCompatible with iOSBlack sport bandGPS enabledHeart rate sensorUp to 18 hours of battery lifeWater-resistant up to 164'

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 products.Track activity metrics when training with this refurbished black Apple Watch Series 4 watch. The ECG app monitors and alerts you of changes in heart rate, while the built-in cellular lets you answer phone calls, read messages and stream music. This GPS-enabled Apple Watch Series 4 watch has an activity tracker that motivates and keeps your on toes daily.