Sale has ended but you can still get this app.
Download Wear remote camera Now
Wear remote camera

Official Description

WIth this application you would be able to contol mobile camera remotely from your android watch.
more specifictly:

-Capture Pictures and watch from camera livestream on your watch.
-Capture Video and watch from camera livestream on your watch (on some mobile devices you can not watch livestrean on watch side).
-Change camera (front & back).
-zoom in and out (front & back).