Audio Adapters : Apple
1Apple Watch requires iPhone 6s or later. Blood Oxygen app measurements are not intended for medical use, including self-diagnosis or consultation with a doctor, and are only designed for general fitness and wellness purposes. 2Apple Watch requires iPhone 6s or later. ISO standard 22810:2010. Appropriate for shallow-water activities like swimming. Submersion below shallow depth and high-velocity water activities not recommended. 3Accessories sold separately.