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Overview
The 70mai Dash Cam A800S + Rear (model A800S with RC06 rear camera) is a budget dual-channel dash cam from 70mai (Xiaomi’s automotive sub-brand), emphasizing true 4K UHD front recording for sharp evidence capture, built-in GPS for location/speed tracking, and ADAS safety alerts. Launched in 2022 with firmware updates through 2025 (latest improving Wi-Fi stability and GPS accuracy), it’s ideal for commuters seeking all-around protection without premium pricing. The Sony STARVIS IMX415 sensor delivers vibrant daytime footage and solid low-light performance via 3D DNR, while the rear provides basic 1080p coverage. At ~$130-160 for the bundle, it’s a steal for 4K dual setup, though the rear cam’s night vision is average and parking mode requires a hardwire kit (~$20). No major hardware changes in 2025, but OTA updates keep it reliable.
Key Specifications
Category Details Front Camera 4K UHD (3840×2160@30fps) Sony STARVIS IMX415 8MP sensor, 140° FOV, f/1.8 aperture, 7-glass lens, HDR/WDR for balanced exposure Rear Camera (RC06) 1080p Full HD (1920×1080@30fps) Galaxycore GC2053 sensor, 130° FOV, f/2.0 aperture (decent day, mediocre night) Night Vision Super Night Vision with 3D DNR + AI noise reduction; clear in tunnels/low light, but rear glare-prone from headlights GPS Built-in GPS logger (overlays speed, route, location on videos for claims) Storage Up to 256GB microSD (UHS-I U3/V30 recommended; ~15-20GB/hour in dual mode); loop recording overwrites old files Connectivity 5GHz Wi-Fi (faster than 2.4GHz for app), Bluetooth 5.0; 70mai app (iOS/Android) for live view, downloads, settings Power 5V/2A USB-C (2025 version); lithium-ion battery (~20 min unplugged); hardwire kit for 24H parking (time-lapse + G-sensor) Dimensions & Weight Front: 3.4 x 2.0 x 1.7 in (87 x 51 x 43 mm), 2.5 oz (70g); Rear: 1.3 x 1.3 x 0.9 in (33 x 33 x 23 mm), 0.7 oz (20g) Other 3″ IPS LCD screen, voice control (“Take photo”), ADAS (lane departure/collision warnings), G-sensor (impact lock), operating temp: 14°F to 158°F Performance and Features
- Video Quality: Front shines with detailed 4K clips (readable plates ~50ft day/~30ft night); dual mode keeps front at 4K while rear hits 1080p—great for insurance but rear softens in dark/rain. H.265 compression optimizes storage.
- ADAS & Safety: Voice alerts for lane drift/forward collisions (calibrate on highways); GPS aids roadside assistance. Parking mode auto-triggers on impacts, with time-lapse for efficiency (hardwire needed).
- App & Usability: Intuitive 70mai app for Wi-Fi previews, sharing to social media, and OTA updates; screen simplifies setup. Voice commands add hands-free convenience; easy 360° front rotation.
- Installation: Adhesive mount, 16ft rear cable; DIY in ~30 min, pro (~$50) for hardwiring. Includes pry tool, stickers, and charger.
Pros and Cons
Pros Cons True 4K front + GPS/ADAS at budget price Rear night vision average (glare/headlight issues) Easy app/Wi-Fi control, loop recording, parking mode (w/ kit) Lithium battery (not supercap—less ideal for hot climates) Compact design, 3″ screen, voice/G-sensor features Occasional app lag; CPL filter ineffective for glare Bundles with card/hardwire; reliable 2+ year durability ADAS finicky in curves; no native 4G/cloud



