My non-ultra gets at least 28 hours, and over 48 in low power mode. I leave it in airplane mode (this leaves bluetooth on, so it doesn’t impact functionality w

My non-ultra gets at least 28 hours, and over 48 in low power mode. I leave it in airplane mode (this leaves bluetooth on, so it doesn’t impact functionality when my phone is nearby) and disabled the always on screen. I agree about the questionable value proposition though. A $35 Amazfit band is surprisingly competitive with it, and has much better battery life.