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.
Turn on Power Reserve. When your battery charge drops to 10 percent, your Apple Watch alerts you and asks if you want to use Power Reserve. When the battery gets too low, your watch automatically enters Power Reserve, and appears next to the time. Learn how to maximize your battery life and lifespan.