In my case, I was seeing the same extreme (~10% per hour) drain until I turned off the Breathe app.
I was wondering if it was the Mac unlocking feature as well, but I've left that on, and am back to watchOS 2 battery life. Along with the Dock / faster app launching, it really does make it feel like a new device.
I was wondering if it was the Mac unlocking feature as well, but I've left that on, and am back to watchOS 2 battery life. Along with the Dock / faster app launching, it really does make it feel like a new device.