On unbranded cameras like this, 4K is often interpolated from a lower-resolution sensor, so footage looks softer than a name-brand 4K cam. Expect usable but not crisp video.

How deep can it go underwater?

It is waterproof only inside its housing, and budget housings are typically rated for shallow snorkeling and diving rather than deep dives. Check the seal before every use and rinse it in fresh water after.

Will it fit my GoPro mounts?

Yes. It is built to fit most standard GoPro mounting accessories, so helmet, handlebar and chest mounts you already own should work.

Does it have image stabilization?

No. There is no gimbal or in-camera stabilization, so handheld and bike footage will look shaky. A chest or helmet mount helps.

What comes in the box?

The camera, a waterproof housing and a wireless remote. Mounts and a memory card are usually not included, so plan on buying a microSD card separately.

Can I control it from my phone?

Yes, over WiFi, for preview and transfer. The connection can be slow and drop out, so the included remote is often the easier way to start and stop recording.