Just found this good priced 4K dual dashcam offer. Reviews look decent as well.
Details from Amazon website:
๐๐ซ๐ข๐ฌ๐ฉ ๐๐ & ๐๐ฎ๐๐ฅ-๐๐๐ฆ ๐๐๐ฌ๐จ๐ฅ๐ฎ๐ญ๐ข๐จ๐ง - Front camera captures in remarkable 4K Ultra HD, while the combined front and rear coverage offers a detailed 4K+1080P, ensuring every critical road moment is recorded.
๐๐ข๐ฌ๐๐ซ๐๐๐ญ, ๐๐จ๐ฆ๐ฉ๐๐๐ญ, ๐๐ซ๐๐๐ญ๐๐ - Effortlessly adjust the dash cam with its 120ยฐ flip-up/down bracket, ensuring precise windshield alignment. The detachable feature allows for easy transfers between vehicles or removal for security. Coupled with a discreet design, it captures quality footage without standing out, maintaining your car's sleek interior.
๐๐ง๐ญ๐๐ฅ๐ฅ๐ข๐ ๐๐ง๐ญ ๐
๐๐๐ญ๐ฎ๐ซ๐๐ฌ ๐๐จ๐ซ ๐๐๐๐๐ ๐๐๐๐๐ญ๐ฒ - Equipped with intelligent features such as loop recording, G-sensor collision detection, a parking monitor, WDR for balanced lighting, and time-lapse capabilities; this system ensures reliable recording, automatic anomaly detection, and superior video clarity across diverse driving conditions.
๐.๐/๐.๐๐๐๐ณ ๐๐ข-๐
๐ข ๐๐ง๐๐๐ฅ๐๐ & ๐๐ฌ๐๐ซ-๐
๐ซ๐ข๐๐ง๐๐ฅ๐ฒ ๐๐ฉ๐ฉ - Harness the convenience of in-built 5.8/2.4GHz Wi-Fi connectivity. Simply connect the dash cam to your device using the "Jarviscam" or "GKU GO" mobile app (available for iOS and Android)This allows intuitive management of live previews, snapshot captures, video backtracking, and fine-tuned settings, all at your fingertips.
๐๐๐๐ญ-๐๐๐ฌ๐ข๐ฅ๐ข๐๐ง๐ญ & ๐๐ฎ๐ฉ๐ฉ๐จ๐ซ๐ญ๐ฌ ๐๐ฉ ๐ญ๐จ ๐๐๐๐๐ - Designed with a durable casing, this dash camera demonstrates longevity and reliability in temperatures ranging from -4~158โ (-20~70โ). The device accommodates micro SD cards up to 128GB (64GB SD Card is INCLUDED). For optimal performance, please use a Class 10 or higher micro SD card and format it before the initial use.
๐๐-๐๐จ๐ง๐ญ๐ก ๐๐๐ซ๐ฏ๐ข๐๐ ๐๐ฅ๐๐ง & ๐๐๐ ๐๐๐๐ก ๐๐ฌ๐ฌ๐ข๐ฌ๐ญ๐๐ง๐๐ - Enjoy ample storage space for your recordings with support for micro SD cards up to 128GB. (SD Card INCLUDED) For optimal performance, please use a Class 10 or higher micro SD card and format it in Jarvis APP before initial use. Plus, benefit from our 12 months service plan, and dedicated customer service. (The service plan can be extended with official registration with GKU) For any issues, please reach out to us through Amazon or GKU support channel, and we'll provide a satisfactory solution within 24 hours.
Note that it only records at 4k when using the front camera only.
When using both front and rear together, front records at 2k and rear at 1080p.
Also i can't find any information about whether it has a battery or capacitor.
I'm hoping capacitor but not holding my breath.
I bought one anyways as the reviews and footage I've seen look great.