Is the 4K real or interpolated?

Budget action cams in this class typically upscale to 4K from a lower native sensor resolution, so expect 1080p to look sharper than 4K.

Can I use it underwater?

It is designed for wet and underwater use, but check the housing seal before every dive and keep within the depth it is rated for.

No. There is no optical or gimbal stabilization, so use a mount or gimbal for smooth footage.

Expect the camera, a waterproof housing, a battery, a charging cable and mounting accessories; confirm the exact bundle before buying.

Runtime is short when recording 4K, often well under an hour, so carry spare batteries for longer sessions.

It uses standard action-camera mounts, so most GoPro-style clips and tripod adapters fit.

At eBay, for $23.95, as of our latest check.

2 stores we checked sell it, including eBay, My Store.

$23.95at eBayChecked Nov 12

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