Question: is apple watch series 1 compatible with iphone 5c?
Answer: 5c is not compatible with Apple Watch. Apple Watch Series 3 (GPS + Cellular) requires an iPhone 6 or later with iOS 11 or later. Apple Watch Series 3 (GPS) requires an iPhone 5s or later with iOS 11 or later. Apple Watch Series 1 requires an iPhone 5s or later with iOS 11 or later.