The Hover Camera comes in at only 238 grams, which is just below the FAA's limit for mandatory hobbyist drone registration. It's small as well: When the propeller wings are folded, it's about the size of a VHS cassette tape. Once you open it up, you'll see all four propellers with brushless motors, all of which are apparently developed in-house. A company rep point out that to enable precise control in such a small device, off-the-shelf components just wouldn't work.
Likewise, the A.I. algorithm is also built from ground up, and it relies on Qualcomm's Snapdragon Flight platform which is running at full speed all the time. Despite this, Zero Zero Robotics' design is able to reuse some of the downward airflow to cool the chipset; and a single charge will last for about eight minutes, after that you can easily swap out the battery at the top.