Overview
- The WOLFBOX G840S is a 12-inch rearview mirror dash cam that replaces your stock mirror with a crisp touch display and dual-channel recording.
- It pairs a 4K front camera with a rear camera, adds GPS for speed/location stamps, and uses a safer supercapacitor instead of a lithium battery.
- It’s designed for drivers who want cleaner installs than suction-cup cams, plus confident reversing and parking assistance.
Why It Stands Out - Large mirror display: The 12-inch screen gives you a much wider field of view than a factory mirror, which is especially helpful in SUVs or trucks with tall headrests.
- True dual purpose: It functions as a normal mirror when the screen is off, and as a live video rearview when on—handy in rain, at night, or when the cargo area blocks your view.
- 4K clarity up front: The 2160p front camera captures license plates and lane details better than 1080p systems, reducing “smear” during fast motion.
- Faster connectivity: 5.8GHz WiFi is snappier than the typical 2.4GHz, making clip transfers to your phone less of a chore.
- Safety-first power: The built-in supercapacitor tolerates heat better than lithium batteries and is less prone to swelling or failure over time.
Installation Experience - Mounts over your existing mirror using included straps; takes minutes, and you avoid running a bulky windshield mount.
- The rear camera wire routes along the headliner and into the tailgate/trunk; plan 45–60 minutes for neat cable management.
- Reverse assist grid lines appear when wired to the reverse light—great for parallel parking or aligning a trailer.
- Includes a 32GB card so you can start recording immediately; you can upgrade later to a larger, high-endurance card if you drive daily.
Road Test Results - Daytime clarity: The front 4K camera keeps signs and plates readable at typical highway speeds. Colors skew neutral rather than oversaturated, making it easier to judge distance and lane positions.
- Night performance: Headlight glare is well-controlled. The rear camera’s night visibility is better than a stock mirror when your back window is tinted or wet.
- Mirror usability: With the display brightness set mid-to-high, reflections remain usable in daylight. At night, the live feed is more informative than a standard mirror, showing what’s behind you beyond the glare of headlights.
- Stability: The supercapacitor setup is stable in heat; no shutoffs or warping after a sunny commute. Loop recording and G-sensor triggers worked as expected during speed bumps and sudden braking.
Smart Features - GPS stamps: Speed and route data overlay neatly on recordings, useful for incident documentation and road-trip logs.
- Loop recording: Automatically overwrites the oldest footage, so you don’t babysit storage. Critical events lock via G-sensor.
- Parking monitor: With constant power (via a hardwire kit), it can capture bumps or movement while the car is off.
- Touch UI: Swipe gestures to adjust angles and switch views; faster than fiddly button systems on traditional dash cams.
Who It’s For - Commuters who want a cleaner install than windshield cams and a better rear view in traffic.
- Rideshare and delivery drivers who need reliable incident footage and easy file transfers.
- SUV/truck owners dealing with blocked rear views from cargo, pets, or child seats.
- New drivers who benefit from reversing guides and a wider situational awareness.
Trade-Offs to Know - Rear cam is 1080p: It’s good, but not as sharp as the 4K front; plates behind you at speed can be harder to read.
- Screen reflections: As with any mirror display, bright sunlight can add glare. A simple anti-glare/polarizing film helps.
- Storage management: The included 32GB card is fine for testing; frequent drivers should upgrade to 64–128GB high-endurance for longer coverage.
- Hardwiring for best features: Parking mode and auto reverse triggers work best with a constant-power hardwire setup.
Buying Advice - Choose the G840S if you want a single unit that cleans up your cabin, records in 4K up front, and doubles as a superior rearview mirror.
- Upgrade the microSD to a high-endurance card for daily driving.
- If you reverse often at night or tow, wire the rear camera to your reverse light for instant guide lines.
- Keep brightness around mid-level for daytime to balance glare and detail; raise it at night for a clearer feed.
Bottom Line - The WOLFBOX G840S delivers a meaningful upgrade over basic dash cams: a wide, stable mirror display, 4K front recording, solid night visibility, and practical reversing aids.
- It’s a smart pick for drivers who value clean installs, broad rear visibility, and dependable incident capture—without turning the cabin into a gadget farm.
Key Specs - Display: 12-inch touch mirror
- Front camera: 4K (2160p) recording
- Rear camera: 1080p recording
- Connectivity: 5.8GHz WiFi, USB
- Power: Built-in supercapacitor
- Features: GPS stamping, G-sensor, loop recording, night vision, parking monitor, reverse assist
- Included: 32GB card, GPS antenna, charger, rear camera and mounting hardware
Call to Action - If you’re ready for cleaner cabin aesthetics and sharper evidence capture, check the current price and availability for the WOLFBOX G840S. It’s an easy upgrade that pays for itself the first time you need footage.