The 70mai A800 Nano combines 4K recording, HDR, voice control and heat-resistant supercapacitor power in a budget dash cam now discounted on Amazon.
70mai’s A800 Nano is being sold at a discounted price of €69.99 on Amazon, positioning it as a budget-friendly 4K dash cam with a specification set that is unusually broad for the category. The unit records at 3,840 x 2,160 pixels and 25 frames per second, and its 140-degree lens is intended to cover several lanes while keeping distortion low enough to help capture number plates, signs and nearby vehicles clearly.
The camera uses a GalaxyCore GC8613 image sensor and an f/1.55 aperture, a combination that should improve light intake in poor conditions. 70mai says HDR support helps to balance exposure on dark roads or in rain, where reflections and uneven lighting can make footage harder to use as evidence. For drivers concerned mainly with incident recording, the appeal is straightforward: sharper 4K footage should provide more usable detail than a typical 1080p dash cam when a collision or dispute needs to be reviewed.
Connectivity is another point of emphasis. According to the product information, Wi‑Fi 6 enables transfers of up to 8 MB/s to phones and tablets, while the 70mai app sorts recordings into a timeline view by hour so clips can be found more quickly. Voice control is available in English for basic functions such as taking a photo or locking a video without touching the device, which may be useful when the driver wants to keep attention on the road.
The A800 Nano also replaces a lithium battery with a supercapacitor, a design choice that generally improves heat tolerance and long-term reliability in car electronics. 70mai says the unit works between -20°C and 70°C and is rated for around 500,000 charge and discharge cycles. In the event of a crash or sudden power loss, the supercapacitor is meant to supply enough energy to save the current file safely, making the model more practical for use in European climates than battery-based alternatives.
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