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.
This will shut down every feature of your Apple Watch but it will keep telling the time, which I guess is its basic function anyway. On your watch clock screen, swipe up to reveal the Glances, and look for the power one, then tap on Power Reserve.