70mai A800S-1 4K Front and Rear Dash Cam with GPS and ADAS

Front 4K and rear 1080p recording give the 70mai A800S-1 two camera views for everyday driving. Its STARVIS sensor and night vision support recording in changing light, while built-in GPS adds location data to your footage. Need to check a clip on the go? Use the 3-inch IPS screen or connect through the 70mai app.

Everyday use

The dual-camera setup records the road ahead and a view from the rear camera, which can also be positioned to film inside the vehicle. That makes the A800S-1 a practical alternative to a front-only dash cam when you want footage from more than one direction. The front camera captures in 4K and the rear in 1080p, with a stated field of view of 140 degrees at the front and 130 degrees at the rear.

The camera starts recording when powered on, without requiring your phone to stay connected to Wi-Fi. For everyday trips, loop recording replaces older files as storage fills, while the G-sensor can lock footage associated with a collision or sudden event. The 70mai app lets you preview, manage, edit, and share clips, and supports over-the-air firmware updates. Dual-band 5GHz and 2.4GHz Wi-Fi provide a way to transfer footage to a smartphone.

Technical overview

• Name: 70mai A800S-1
• Type: Front and rear dash cam
• Video resolution: 4K front, 1080p rear
• Display: 3-inch IPS screen
• Connectivity: Built-in GPS, 5GHz and 2.4GHz Wi-Fi, app control
• Driver assistance: ADAS voice alerts for lane departure and following distance
• Recording: Loop recording, G-sensor event locking, time-lapse
• Storage: microSD cards from 32GB to 256GB, U3 or faster is recommended
• Parking mode: Requires the 70mai UP03 hardwire kit
• Included components: Front camera, rear camera, car charger, mounts, power cords, wiring crowbar, electrostatic stickers, and user manual

What you’ll notice day to day

The STARVIS IMX415 sensor, F1.8 aperture, and seven-layer glass lens are designed to capture clear footage in low light and adjust exposure when brightness changes. This helps make the camera useful on commutes that pass through tunnels, shaded roads, or nighttime streets. The 3-inch screen offers a direct way to view camera settings and footage, while GPS and ADAS add driving context and voice alerts without making the phone connection necessary for recording.

For parking surveillance, the G-sensor can trigger recording after a sudden shake or collision, and the app can notify you to check event footage. Time-lapse recording is another parking-mode option. Parking mode requires the separately available UP03 hardwire kit, and a microSD card is needed for recording. Buyers often praise the video clarity and straightforward setup, feedback also includes reports of app connection difficulties and unexpected emergency-recording activation. Initial setup through the screen prompts lets you configure the camera before regular use.

Final verdict

The 70mai A800S-1 suits drivers who want a dual-view recorder with 4K front footage, a 1080p rear camera, GPS, and app access in one system. Its night-vision features, event locking, and ADAS voice alerts make it well suited to documenting routine drives, while the optional hardwire kit enables parking monitoring. Choose it for front-and-rear coverage with a built-in screen and connected video management.