I'm running a Clockology face on top of AOD on full brightness. During the night, nightime mode. Not really much for messaging. Received and Answered a couple calls. A few heart checks in the background. Sound levels monitoring on. Workout mode twice yesterday, getting ready for a long walk, well see what that does. Mostly just using it as a fun AOD watch on, but relying on only cellular, no phone connection, no wifi. I even messed around with watch faces for a good 2 hours, and put bluetooth on long enough to transfer them to the watch, then back off. We are going on 40 hours 17% left.