What are some alternatives?
When comparing eyyCAM and Zoom In by Hot Wheels, you can also consider the following products
Birdie - The New Album Out Now featuring the single Keeping Your Head Up.
Mokacam - World's smallest 4K camera, aka the "GoPro killer"
Atom - At GitHub, we’re building the text editor we’ve always wanted: hackable to the core, but approachable on the first day without ever touching a config file. We can’t wait to see what you build with it.
Olfi - The essential 4k action camera
GoPro Karma - If a GoPro is your primary mode of filming, you should definitely be interested in the GoPro Karma.
YoCam - Tiniest most versatile waterproof camera