battery drains in couple days with no gps use, never happened before
seems to be happening on firmware 3.70
only using as watch when this happens now with no phone notification etc
We'd recommend by starting with a hard reset (holding power button down until the display turns off) before powering your device back on and using it like normal.
This will not erase any of your settings. This shouldn't be necessary normally, but it can often clear up odd symptoms like excessive battery drain.