BeOn's smart bulbs keep an ear out for trouble (pictures)

BeOn Bulbs are innovative, feature-rich smart lights with a focus on home security. Click through to see everything they can do.

The first thing you'll notice about BeOn's bulbs is that each one has a removable battery pack in the center. That yellow pack also houses the bulb's Bluetooth radio.

To get started, just click the batteries into place, screw the bulbs in and pair them with the app like you would any Bluetooth device.

Once they're up and running, the bulbs will work just like normal. Each one puts out the same amount of brightness as a 60-watt incandescent while using a power draw of just 10 watts.

Thanks to the built-in batteries, BeOn's bulbs will work when things are switched off -- or when the power is out.

The app does a good job of organizing all of the bulb's features, and divides them into three categories.

Activate "Security Lighting" mode, and the bulbs will automatically begin to mimic your normal usage patterns to help create the impression that you're home.

You can also train the bulbs to listen for the sound of your doorbell. They'll come on automatically whenever they hear it, which could potentially scare off a burglar who was trying to determine if anyone was home.

If you're coming home to a dark house, you can pull out your app and activate "Welcome Home" mode. It'll turn all of your bulbs on for three minutes to help light up your entry.

The app also offers a few safety-minded features.

Like with your doorbell, you can train the bulbs to listen for your smoke alarm or burglar alarm. If they hear it, the lights will come on automatically, even if things are switched off.

Moving forward, new modules could offer new features -- but BeOn isn't promising anything specific just yet.

BeOn's bulbs cost $75 each, which makes them some of the most expensive smart bulbs we've ever tested. They aren't available outside of the US just yet, but BeOn hopes to expand internationally in 2016. That price comes out to roughly £50/AU$105.

You can also buy a three-bulb starter pack for $200 (about £130/AU$285).

That's a lot to spend on light bulbs, but these LEDs have some of the most unique and intriguing features we've seen. Are they worth the high cost of buying in? Check out our full review to see what we think.