These are instructions to hard reset an E2, but probably is the same for E1, so you can try the following on your own caution/discretion:
1. Press and hold down the power button until watch restarts (about 15 seconds)
2. During the boot up animations (TAG's logo, Intel's logo, or the swirling balls), press and hold the crown and simultaneously swipe from top left to bottom right, then release crown (You can repeat this process until the screen blacks out and the boot process restarts)
3. The watch will boot to an image of the Android character on his back. Long press the power button for about 5 seconds and release. You should see the "Android system recovery" menu.
4. Short press the power button three times to go down the menu to highlight "wipe cache partition"
5. Long press for 3 seconds to select "wipe cache partition" and confirm your selection
6. Short press the power button twice to go down the menu to highlight "wipe data/factory reset"
7. Long press for 3 seconds to select "wipe data/factory reset" and confirm your selection
8. Select "reboot system now'. Long press for 3 seconds to select
9. Watch will restart to the Welcome screen. This will take less than 2 minutes.
Good luck!
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