The battery on the Ultras is about double the regular series watch batteries, so that tracks. My point was that I was going to struggle with having a device tha

The battery on the Ultras is about double the regular series watch batteries, so that tracks. My point was that I was going to struggle with having a device that I couldn't rely on to make it through a full day including the evening— having to take it off for a charging session in the afternoon would be too disruptive for the overall package to be worth it to me.