Dash Cam Front and Rear Dual 4K C4 - HDR Night Vision

In this review of the Dash Cam Front and Rear C4, the bottom line is simple: this dual 4K system is aimed at drivers who want the clearest possible evidence from both front and rear cameras, especially in low light. The reviewer found the standout feature to be the new STARVIS 2 IMX678 sensor paired with a 7-layer glass lens and F/1.5 aperture, which delivers noticeably better night and high-contrast footage than typical dash cams. Setup is straightforward and the included 128GB SD card means the camera is ready to record right away.

Key Features

• STARVIS 2 IMX678 sensor: Produces improved low-light capture so nighttime details and license plates are more legible than with older sensors.
• Dual true 4K recording: Both front and rear cameras record at 4K@30fps, giving high resolution evidence from both directions simultaneously.
• HDR and WDR processing: Automatically balances bright and dark areas to retain detail in scenes with strong contrast such as tunnels and bright headlights.
• Free 128GB SD card included: The camera ships with a preinstalled 128GB card that supports several hours of continuous loop recording and reduces the risk of running out of space.
• 5.8GHz WiFi 6 and app support: Faster wireless transfers and a mobile app let users view, download, and share clips without removing the card.
• Built-in GPS and parking monitoring: GPS logs speed and location for stronger incident context, while a G-sensor triggers emergency recording and time-lapse parking mode (hardwire kit required for constant power).

Who It's For

The Dash Cam C4 is ideal for drivers who prioritize video clarity and night performance, such as professional drivers, frequent night commuters, and owners of high-value vehicles who want full coverage from both front and rear. The included 128GB card and built-in GPS make it practical for users who want straightforward, usable footage without immediately buying accessories.

Those who should look elsewhere include buyers on a very tight budget who do not need 4K resolution or users who require a bundled hardwiring kit for 24-hour powered parking mode, since continuous parking monitoring requires a separate hardwire accessory. Casual users who only need basic 1080p recording may find simpler, lower-cost alternatives more appropriate.

Pros & Cons

Pros

• Excellent low-light performance from the STARVIS 2 IMX678 sensor and F/1.5 lens.
• True dual 4K recording for front and rear provides detailed evidence in both directions.
• Includes a preinstalled 128GB SD card so the unit is ready to use out of the box.
• Fast 5.8GHz WiFi 6 and app support make file transfer and sharing convenient.

Cons

• 24-hour parking monitoring requires a separate hardwiring kit for continuous power, which adds cost for full-time surveillance.
• High-resolution files are large, so long-term storage or archiving may require extra management.

Specifications

Brand	sarmert
Front/Rear Resolution	4K@30fps + 4K@30fps
Sensor	STARVIS 2 IMX678
Lens Aperture	F/1.5 with 7-layer glass lens
Included Storage	128GB SD card (preinstalled)
Connectivity	5.8GHz WiFi 6, mobile app
Additional Features	Built-in GPS, G-sensor, HDR/WDR, 24-hour parking monitoring (hardwire kit required)

Our Verdict

The SARMERT C4 Dash Cam is a strong choice for drivers who want high-detail recording and superior night vision from both front and rear cameras. With true dual 4K capture, an included 128GB card, and fast WiFi, it delivers excellent value for those who need reliable evidence and easy file sharing, though buyers should budget for a hardwire kit if they require continuous parking surveillance.

Frequently Asked Questions

Does the camera record both front and rear in 4K at the same time?
Yes, the unit supports simultaneous 4K@30fps recording for both front and rear cameras.

Is a memory card included so the camera is ready to use?
Yes, a 128GB SD card is preinstalled in the dash cam and ready for immediate use.

Can I use parking monitor out of the box?
Parking monitoring and time-lapse parking require a constant power connection; a separate hardwiring kit is needed for full 24-hour powered parking mode.