Incidence not known. 1  Chest discomfort. 2  difficulty swallowing. 3  hives or itching.  increased 1  sweating. large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs.  loss of 1  consciousness. noisy breathing.  slow or irregular 1  heartbeat. swelling of the  joints.
Keep in mind that your Apple Watch must be charged at least a little bit before will power on. How to turn off the Apple Watch. Press and hold the side button until you see the power down menu appear. Once it does, drag the Power Off slider to the right to turn the watch off.
If you want to manually use this feature, swipe up from the main home screen to view the Apple Watch Control Center. Look for the water droplet icon and press it. You'll then be prompted to twist the digital crown to eject the water.