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Prices may varyThis product ranks #24 of 29 in Dash Cam.Three above it ↓
Last reviewed June 22, 2026
TL;DR Daytime plate legibility unconfirmed, no independent community footage comparison found at time of review; the manufacturer specifies 4K front + 1080p rear with an f/1.6 aperture, the headline step-up over the base M2's 1080p front. Night vision: independent footage comparison not available at time of review. Event-based parking mode (no buffered pre-event recording), and the Smart Hardwire Kit is not included, you buy it separately. Lithium-ion battery, not a supercapacitor, relevant for hot-climate longevity. FCC-only; no UL/ETL electrical safety certification.
The M2 Max is the 4K step-up in Rexing's mirror line: a 12-inch IPS touchscreen straps over your factory mirror and records 4K from the front camera and 1080p from the rear, which also streams a live backup view when you reverse. 5.0GHz Wi-Fi, GPS, a 170-degree front view, blind-spot detection, and rear-collision ADAS round out the feature set. No independent community footage comparison for the M2 Max was located at time of review, so the 4K label and f/1.6 aperture are spec hypotheses rather than confirmed plate-legibility results. Note the asymmetry: only the front is 4K, the rear camera that feeds the mirror and backup view stays 1080p. Parking mode is event-based, and unlike the base M2 the hardwire kit needed to run it is sold separately. Energy storage is a lithium-ion battery, so it carries no supercapacitor heat advantage in a hot parked car, and the glossy mirror screen is prone to daytime glare.
Best match for the driver who specifically wants the 4K front camera and 5GHz Wi-Fi app transfer that the base M2 lacks, plus the full mirror-replacement package of backup camera, blind-spot detection, and ADAS. Skip it if parking protection is your priority on a budget: the hardwire kit is an extra purchase here, where the base M2 includes it. Skip it too if you want verified high-resolution footage or hot-climate battery longevity, the 4K is front-only and unconfirmed by independent comparison, and the lithium-ion battery degrades faster in summer heat than a supercapacitor model like the Rexing V3.
No PPE is required for installation or normal use. The M2 Max uses a lithium-ion battery; at end of life, drop the unit at a Best Buy or Call2Recycle e-waste point so the battery is handled properly, no manufacturer take-back program is documented. FCC certification covers radio-emissions compliance only; no independent UL or ETL electrical safety listing was found.
The headline upgrade is resolution: the M2 Max records 4K from the front camera versus 1080p on the base M2. It also adds built-in 5.0GHz Wi-Fi (the base M2 advertises no Wi-Fi or app) and a wider 170-degree front field of view. Both are 2-channel 12-inch mirror cams; the rear camera on the Max stays 1080p.
No. On the M2 Max the Smart Hardwire Kit is sold separately (optional). That is a step down from the base M2, which ships the hardwire kit in the box. You need the hardwire kit to keep the camera powered for parking mode while the engine is off, so budget for that extra purchase if parking protection matters to you.
Only the front camera is 4K. The rear camera records at 1080p, and the rear feed is also what you see as the live mirror view and the backup-camera view when reversing. So the 4K upgrade improves the forward recording, not what the driver sees in the mirror or backing up.
Rexing does not advertise a supercapacitor for the M2 Max, and the heavy 12-inch mirror form factor carries an internal lithium-ion battery. Unlike supercapacitor models, a lithium battery can degrade faster in the high heat of a parked car in summer. If hot-climate longevity is your priority, a supercapacitor model handles that environment better.
A few to weigh: the large glossy 12-inch screen can glare in bright daylight and reflect headlights at night; the unit straps over your factory mirror, adding bulk and weight that can shift on some vehicles; and the live mirror and backup view depend on the 1080p rear camera and its cable run, so a dirty rear lens or a cable fault degrades both the recording and the mirror view.
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