Amidst all the fist-pumping and Bono-goofing on Tuesday, one piece of information was conspicuously absent: The Apple Watch’s battery life. What’s the point of strapping a tiny computer to your body if it needs constant charging? According to Re/code, even Apple hasn’t quite figured out the battery dilemma yet. After Tim Cook mentioned charging Apple Watch “every night” on stage, John Paczkowski confirms today that a source within Apple pins the charge-by date at nightly—which would imply that the Apple Watch has a battery life of less than a day. Apparently, Apple is still working to improve that number before release. “We anticipate that people will charge nightly which is why we designed an innovative charging solution that combines our MagSafe technology and inductive charging,” an Apple spokesperson told Paczkowski, seemingly confirming the source.