# 70mai 4K A900 Ultra Dash Cam Review: Dual 4K Recording and Features

Canonical page: https://savlume.com/items/qf3yt2gzgeaizava79b1grs1o
Publisher: Savlume
Published on Savlume: 2026-10-14T13:38:40.309Z
Content updated: 2026-10-14T13:42:25.889Z
Source publication time: 2026-10-14T13:00:00.000Z
Offer status: Unverified

TechRadar tested the 70mai 4K A900 Ultra dual-camera dash cam across four weeks of daily commutes and road trips. The reviewer praised its dual 4K resolution front and rear, powered by Sony Starvis 2 sensors that deliver sharp license plate details in both daylight and nighttime conditions. Fast Wi-Fi 6 transfers and physical buttons simplify file handling, though unlocking 24-hour parking surveillance requires buying an optional hardwire kit.

## Media review

TechRadar’s reviewer found the 70mai 4K A900 Ultra easy to set up and use, and praised its 4K front-and-rear footage, including after-dark recording. The reviewer also notes the extra cabling involved and that parking surveillance requires an optional hardwire kit.

Attribution: TechRadar Reviews
AI-assisted summary of source text, not a Savlume hands-on test.

- Source-reported strength: The reviewer reported good definition in license plates and road signs, and said after-dark footage was as good as daylight footage.
- Source-reported strength: The reviewer found setup and everyday file management straightforward using the camera buttons and 70mai app.
- Source-reported strength: The reviewer said the cameras handled variable lighting and weather conditions, including driving through a tunnel.
- Source-reported limitation: The reviewer notes that routing the additional cables for two cameras can make installation more involved.
- Source-reported limitation: The hardwire kit needed for parking surveillance is optional and was not tested by the reviewer.

### Does parking surveillance work without an extra purchase?

No. The source says the optional hardwire kit is needed for parking surveillance.

### How did the reviewer assess footage quality at night?

The reviewer said the after-dark footage was as good as footage shot in daylight.
## Evidence and sources

Source report only. Merchant price, availability, seller, and conditions have not been independently confirmed.
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TechRadar Reviews: https://www.techradar.com/vehicle-tech/dash-cams/70mai-4k-a900-ultra-dash-cam-review

AI-assisted summary of cited source material. Not a hands-on review. Prices and availability can change.