Take a look at "Bluetooth Remote Camera"

https://play.google.com/store/apps/details?id=tw.blogspot.reneeciou.bluetooth.remote.camera

very useful app. for android watch with camera and mobile phone. It’s working great with Kospet hope , I am using watch as camera and mobile as remote , as far I know this is the only app which allows you to use both ways and view finder is also great , you can control zoom , scene etc. View finder does not work while video recording, may be my mobile and watch does not support it.Install it friends it’s fun and some time it’s useful, you can use watch as camera in hard to see places and mobile as monitor. Enjoy ;:blush:
Warm regards Mehul