Remote Shutter Using Apple Watch
OK. You are not going to buy an Apple Watch as a photo accessory. You are going to buy it for its health, fitness, safety and communication functions.
However, when you have an Apple Watch, use it to view the iPhone camera image, set a shutter time and take the photo. It is perfect to grab those timer photos when you iPhone is attached to a tripod. It is an awesome photography accessory. Apple Link