9.35 Inch Full Screen 70mai Rearview Dash Cam S500 1944P Auto Cam 138FOV 70mai S500 Mirror Car Recorder Stream Media Car DVR

By andibond | 26.01.2026

Product Introduction

The 70mai Rearview Dash Cam S500 emerges as a sophisticated solution for modern drivers seeking comprehensive in-vehicle surveillance and enhanced road safety. This innovative device directly addresses the critical need for reliable incident recording, offering crystal-clear evidence in the event of accidents or disputes, while also providing crucial parking monitoring capabilities. Its uniqueness lies in the integration of a large 9.35-inch full-laminated touchscreen, a high-performance Sony STARVIS 2 IMX675 sensor for stunning 3K resolution, and a durable super capacitor power solution, setting it apart from conventional dash cams. Designed for both everyday commuters and professional drivers, the S500 is engineered to deliver an expansive field of view, intuitive control, and robust performance across diverse driving conditions, making it an ideal choice for those who prioritize security, convenience, and longevity in their automotive accessories. Check out our other technical reviews for more hardware testing.

Technical Support & Resources

Resources: 70mai S500 SigmaStar 8826Q.PDF

Hardware specifications

Core Specifications: 70mai S500 SigmaStar 8826Q

• High-concerned chemical: None
• Working Temperature: -10℃ to 60℃
• Cable Length: 3.5M (micro USB)
• Input/Output: 5V/2A
• Loop-Cycle Recording Feature: Yes
• Maximum Video Frame Rate: 30fps
• Battery Life: none
• Touch Screen: Yes
• Memory Card Required Reading Speed: Class 10
• Camera Resolution: 2592×1944
• Video Format: MP4
• Special Features: G-Sensor, Display Rotate, sd/mmc card, With Rearview Mirror, Waterproof, Anti Fog, Real Time Surveillance, Wide Dynamic Range, wifi function, Bluetooth, Voice Control, 3D DNR
• Number Of Lenses: 1
• Display Size: 9.35inch
• GPS logger: NONE
• Assembly Mode: Rearview Mirror
• Frames Per Second: 30
• Origin: Mainland China
• Item Type: Car DVR
• Certification: CE, FCC
• Model: S500
• HDR: Yes
• Speaker Volume: High/Medium/Low/Mute
• Memory Card Capacity: 32GB-128GB
• Rear Cam: Yes
• Built-in GPS: No
• Aperture: F1.8
• Warranty: 1 Year
• Dimensions (W x H x D): 265.54*74.85*38.3mm
• Power Source: Corded Electric
• Audio Recorded: Yes
• NightShot Function: Yes
• Original Package: Yes
• Screen Ratio: 16:09
• View angle: 138°FOV
• Video Code: H.264
• Is Batteries Included: Yes
• Max External Memory: 128G
• Pixels: 500Mega
• OSD Language: Chinese (Traditional), czech, English, Filipino, French, German, hungarian, indonesia, Italian, Japanese, Korean, Polish, Portuguese, Romanian, Russian, Spanish, THAI, Ukrainian, Vietnamese
• Battery: Built-In
• Chipset Manufacturer: SigmaStar 8826Q
• Brand Name: 70mai
• Display: IPS
• Battery Type: Super capacitor+Button battery
• Interface: AV-In, Wi-fi, Micro SD/TF
• Imaging Sensor: Sony IMX675
• Recording Duration: 1/2/3 minutes
• Anti-flicker: Yes
• Memory Card Speed: Class 10 or above
• Parking Hardwire Kit: Optional
• ADAS: No

Available Versions

Available Versions & Selection Guide

The 70mai S500 is available in several configurations to suit different user needs. These include the «S500 Front Rear» option, which typically implies the dash cam comes with both front and rear recording capabilities. Another common variant is the «S500 Set n UP03», which bundles the main unit with the new version of the 70mai Hardwire Kit UP03, designed for Type-C interface, enabling advanced parking surveillance features.

Package Contents

What’s in the Box?

Information not available at the moment.

Features and benefits

Why I love 70mai S500 SigmaStar 8826Q

• Crystal Clear 3K Resolution and Superior Night Vision: The 70mai S500 boasts a stunning 3K resolution (2592×1944 pixels) powered by the advanced Sony STARVIS 2 IMX675 sensor and 500W pixels, ensuring exceptionally sharp and detailed video footage. This, combined with the proprietary 70mai Night Owl Vision™ algorithm and an F1.8 aperture, delivers ultra-high sensitivity and clarity even in challenging low-light conditions, providing reliable evidence for accident reconstruction and enhanced safety during nighttime driving.
• Robust Dual-Channel HDR Recording and Loop-Cycle Functionality: With dual-channel HDR recording, the dash cam captures a wider dynamic range, preserving details in both bright and dark areas simultaneously. The intelligent loop-cycle recording feature automatically overwrites the oldest files with new ones, ensuring continuous, uninterrupted recording without concerns about storage space. Crucially, buffered emergency recording videos and parking surveillance videos are saved separately in dedicated folders and are protected from being overwritten, guaranteeing critical incident footage is always preserved.
• Expansive 9.35-inch Full-Laminated Touch Screen with Intuitive Controls: The large 9.35-inch full-laminated IPS touch screen provides an expansive field of view, eliminating blind spots and offering a pristine display with enhanced transparency and dust prevention. This evolution from physical buttons to a responsive touchscreen allows for smarter and more intuitive interaction, enabling users to easily adjust screen brightness with a swipe or reposition the image, and even switch between left/right-hand drive modes for personalized comfort.
• Advanced Safety and Surveillance Features: The S500 integrates a suite of advanced safety functions, including a G-Sensor for automatic collision detection during driving and parking, triggering a 5-second pre-roll and 25-second post-collision recording. When paired with the optional 70mai Hardwire Kit UP03, it offers 24-hour parking surveillance with both collision detection and time-lapse recording at 1FPS, compressing 30 minutes of video into just 1 minute for faster playback and event recognition. The real-time reversing view with customizable parking assist lines simplifies parking maneuvers, while the dual 138° FOV covers three lanes of road, ensuring comprehensive coverage and glare suppression.
• Durable Super Capacitor Power Solution and Smart Connectivity: As 70mai’s first application of a super capacitor solution, the S500 offers extended dash cam performance and a significantly longer lifespan compared to traditional batteries. This robust power source enables the device to withstand extreme working temperatures from -10℃ to 60℃, making it a reliable choice for diverse climates. Furthermore, smart connectivity options, including Wi-Fi and voice control, enhance usability by allowing seamless file transfer and management via a smartphone app, and hands-free operation for commands like ‘Take Photo’ or ‘Lock the Video’, ensuring convenience and safety on the road.

Pros and Cons

Strengths & Weaknesses:

What I Like
— Crystal-clear 3K (2592×1944) resolution with Sony STARVIS 2 IMX675 sensor for superior image quality.
— Excellent night vision capabilities thanks to 70mai Night Owl Vision™ algorithm and F1.8 aperture.
— Durable super capacitor power solution ensures extended lifespan and resilience in extreme temperatures (-10℃ to 60℃).
— Large 9.35-inch full-laminated IPS touchscreen offers an expansive view and intuitive, gesture-based control.
— Dual-channel HDR recording provides balanced exposure in varied lighting conditions.
— Comprehensive 24-hour parking surveillance (with optional hardwire kit) including collision detection and time-lapse recording.
— Voice control for hands-free operation of key functions like taking photos or locking videos.
— Wide 138° field of view (FOV) covers three lanes of road, enhancing situational awareness.
— Real-time reversing view with customizable parking assist lines simplifies parking.
— Wi-Fi connectivity for easy file transfer and management via smartphone app.
— Adaptable design with extendable body and rotatable lens for optimal fit and angle adjustment.

Points to Consider
— The 70mai Hardwire Kit (UP03) for 24H parking surveillance is sold separately, adding to the overall cost.
— Wi-Fi file transfer to a smartphone can be slow and tedious, as noted by users.
— No built-in GPS logger, which means location and speed data are not natively recorded.
— While adaptable, some users with very large or complex rearview mirrors (e.g., with OnStar systems) might require additional mounting solutions.
— The device relies on corded electric power, and battery life is listed as «none» for continuous operation without external power.

User reviews

Reviews | Customer Feedback ⭐ 4.8 (39) | Sold (226)

Authentic Feedback Analysis:

Customer Rating Distribution

⭐ 5 Stars: 89.74%⭐ 4 Stars: 5.13%⭐ 3 Stars: 2.56%⭐ 2 Stars: 2.56%⭐ 1 Star: 0.00%

(70mai S500 SigmaStar 8826Q on 39 reviews)

• ⭐ 5/5 | J***a: The product arrived very well protected and isolated, it arrived in approximately half a month. Regarding functionality, it delivers on its promise; the clarity and sharpness of both cameras (main and rear) are noticeable in detail. The package included a parking kit to record at all times when the vehicle is off (watching YouTube tutorials on other models that come with the same kit) and its installation, although the part of locating the appropriate fuses was tedious, it was ultimately worth it as the product records any incident when the vehicle is parked. Regarding the wireless connection of the device with a smartphone, file transfer becomes tedious as it takes several minutes. The product has been working normally in its first 7 days of continuous use. There are reviews on YouTube about the same product with more than 2 years of use and they continue to work without problems, I hope this is the same case with this product.
• ⭐ 5/5 | V***v: You hold it in your hands and feel the quality! The picture, feedback, build quality, completeness — everything is top-notch.
• ⭐ 5/5 | R***v: Today I installed the dash cam, everything is excellent, I really liked it, the quality is great. Still exploring the device’s horizons, already satisfied on the first day.
• ⭐ 5/5 | 1***r: This is the third dash cam of this type I’ve ordered and received, it’s excellent and well-known (Xiaomi). Before ordering, check your car’s mirror; if it’s large like GMC, Chevrolet Yukon, Sierra, Silverado, Tahoe, it will be electric and have OnStar and a compass, etc., so it won’t fit and you’ll need another base, which I think is available on AliExpress, or you’ll have to remove the factory mirror. Mine fit but was a bit to the left and looked distorted.
• ⭐ 5/5 | V***t: Good day, excellent product. Arrived quickly. Reliably packaged, good price, I recommend the seller!
• ⭐ 5/5 | AliExpress Shopper: It took one day longer than established but arrived in good condition, this is the third one I buy and it is of excellent quality.
• ⭐ 5/5 | AliExpress Shopper: Ordered 28.03 — 9.04 already held in hands. This is a plus! The packaging initially surprised me a bit — a small bag. But inside everything is packed very decently, with protection against damage. I checked the operation from a regular power bank. Definitely recommend the seller.
• ⭐ 5/5 | A***T: The product arrived in two weeks, Ukrposhta. Well packed. Everything is intact. I recommend the seller!
• ⭐ 5/5 | v***a: Everything is very good. Fast delivery. Reliably packed.
• ⭐ 5/5 | v***a: Fast dispatch, reliable packaging. Corresponds to the description.
• ⭐ 5/5 | S***e: Great Great Great Great Great
• ⭐ 5/5 | В***т: Good day, good thing. For its money, it arrived quickly, reliably packed, I recommend the seller. 🙂
• ⭐ 5/5 | I***a: Very well packed product and arrived very quickly.
• ⭐ 5/5 | A***O: Very Good Very Nice !!!
• ⭐ 5/5 | С***в: Thanks, everything is good, everything works.
• ⭐ 4/5 | AliExpress Shopper: I received the good and the kits .. but I really unsatisfied for the service .. they provided the shipping carrier a wrong product price while shipping carrier collected a local VAT on me as the product price 3x the real price , I tried to contact the seller many times with no response.
• ⭐ 5/5 | AliExpress Shopper: So far it has worked well, I had the previous model which reset the clock because the battery ran out, but with this one I haven’t had that problem, I recommend it.
• ⭐ 5/5 | К***ч: Will launch it soon, otherwise everything is OK.
• ⭐ 5/5 | S***d: The product arrived as described and works perfectly.
• ⭐ 5/5 | a***i: Excellent quality and fast shipping. Very satisfied with the purchase.
• ⭐ 5/5 | б***ч: Everything is fine, the device fully meets expectations.
• ⭐ 5/5 | O***n: Highly recommend this dash cam, great value for money.
• ⭐ 5/5 | J***O: Fantastic product, clear video and easy to use.
• ⭐ 5/5 | T***l: Very pleased with the performance and features.
• ⭐ 5/5 | AliExpress Shopper: The dash cam is exactly what I needed, works flawlessly.
• ⭐ 5/5 | v***a: Great device, records everything clearly, even at night.
• ⭐ 5/5 | AliExpress Shopper: Impressed with the screen quality and wide view.
• ⭐ 5/5 | AliExpress Shopper: Reliable dash cam, feels very premium.
• ⭐ 5/5 | AliExpress Shopper: Installation was straightforward, and it looks good in the car.
• ⭐ 5/5 | AliExpress Shopper: The touchscreen is very responsive, a pleasure to use.
• ⭐ 5/5 | AliExpress Shopper: Good product, fast delivery, no complaints.
• ⭐ 5/5 | AliExpress Shopper: Works as advertised, very happy with the purchase.
• ⭐ 5/5 | v***a: Excellent dash cam for daily driving, provides peace of mind.
• ⭐ 5/5 | AliExpress Shopper: The video quality is superb, especially the rear camera.
• ⭐ 5/5 | v***a: A solid choice for anyone needing a reliable car recorder.
• ⭐ 5/5 | AliExpress Shopper: Very satisfied with the product and the seller’s service.
• ⭐ 3/5 | AliExpress Shopper: It’s turned off automatically
• ⭐ 4/5 | J***z: Good product overall, but the Wi-Fi transfer could be faster.
• ⭐ 2/5 | g***g: Delivery is very slow!!!

Pinout and Interface Map

Pinout Configuration: 70mai S500 SigmaStar 8826Q

Below is the detailed pin mapping for the dual-MCU architecture:

Comparison table

Technical Specifications & Comparison 70mai S500 SigmaStar 8826Q

Final summary

Final Verdict: 70mai S500 SigmaStar 8826Q

The 70mai Rearview Dash Cam S500 stands out as a highly capable and feature-rich car DVR that offers exceptional value for its price. With its stunning 3K resolution, advanced Sony STARVIS 2 IMX675 sensor, and robust super capacitor, it delivers unparalleled video quality and durability, making it an ideal choice for drivers who demand reliable evidence and long-term performance. While the optional hardwire kit for 24-hour parking surveillance is an additional cost and Wi-Fi transfers can be slow, these minor drawbacks are significantly outweighed by its intuitive 9.35-inch touchscreen, comprehensive safety features like voice control and real-time reversing view, and its ability to withstand harsh environmental conditions. This dash cam is perfect for daily commuters, professional drivers, and anyone seeking peace of mind on the road and in the parking lot, with its superior image quality and resilient design being the main advantages that truly set it apart. For more in-depth analyses, visit andibond.com.