Promate Rovex-H3 Triple Channel Dash Cam 4K UHD, GPS Speed Tracking, ADAS Alerts, Dual-Band WiFi, G-Sensor, Parking Mode, 3.16” IPS Display, Night Vision, 512GB microSD Support / ROVEX-H3 / ROVEX-H3

The Promate ROVEX-H3 is a triple-channel dash cam recording 4K UHD at the front alongside cabin and rear channels. It uses a GC5603 sensor behind an F1.8 lens, adds GPS speed tracking and ADAS alerts, runs from a DC 12 to 24V supply and accepts microSD cards up to 512GB.

The forward camera records in 4K UHD. That resolution is what makes a number plate legible at a following distance rather than just a visible blur, and the front view is the channel that ends up mattering in almost every incident, so it carries the highest resolution the system offers.

Running two cameras, the H3 records 4K plus 1K or 2K plus 1K. With all three connected it records 4K plus 1K plus 1K, or 2K plus 1K plus 1K. Interior coverage is what makes the system useful for ride-hailing and fleet work, where what happens inside the vehicle matters as much as the road.

Imaging comes from a GC5603 sensor sitting behind an F1.8 aperture lens. The wide aperture admits more light than the F2.0 optics found on lower-specified cameras, which is the difference between usable and unusable footage once you are relying on street lighting rather than daylight.

The H3 includes night vision so recording stays legible after dark. Most of the value of a dash cam sits in the hours when visibility is already poor, since that is when incidents are most likely and when a driver's own account of events is least reliable without corroborating footage.

Advanced driver assistance alerts run on the camera itself, providing lane departure and forward collision warnings. This is the feature that makes the H3 more than a passive recorder: it acts before an incident rather than only documenting one, using the same forward camera that handles the recording.

GPS logs speed and position in real time, stamping each recording with verified location data. That converts footage into a record that can corroborate where you were and how fast you were travelling, which is frequently the disputed point after a collision rather than what the video shows.

A built-in three-axis accelerometer detects impact and immediately locks the current clip, protecting it from being overwritten by loop recording. Without that lock, the most important file on the card is on a countdown to deletion from the moment it is recorded, which defeats the purpose of running the camera.

Parking mode keeps the H3 monitoring the vehicle when it is unattended, saving footage automatically when the G-sensor registers an impact. Car park damage is the classic case where nobody leaves a note, and it is the one situation where a camera has to work entirely without a driver present.

The camera offers WiFi on both the 2.4GHz and 5GHz bands, with the faster band cutting the time needed to pull a 4K clip onto a phone. A 3.16-inch IPS display running at 376 x 960 handles setup and playback on the device, holding colour when viewed at an angle from the driver's seat.

The H3 accepts microSD cards up to 512GB, recording MP4 video with H.265 or H.264 compression and JPEG stills. H.265 stores roughly the same quality in about half the space, which extends how far back the loop reaches before older files are overwritten. Anti-flicker settings cover 50Hz and 60Hz lighting.