[Spoilers ahead...based on material up to Season 2, Episode 11]
Electronics do not work in the underground Kree city in Episode 10. This is very important to subsequent events: no robots, no communication, no gadgets.
Yet, in the very next episode Fitz analyzes the metrics recorded by the watch Skye was wearing.
The data he recovers turns out to be a crucial plot point, as it leads Fitz to cover up Skye's transformation from the rest of S.H.I.E.L.D.
Is there an explanation for why electric flashlights didn't work, but Skye's electronic watch did?