Personally, am not using but from what I know I have associates that bought this Anytek Dashcam and they has been using with no issue since he bought during the 2015 CPSE in Shenzhen. BTW, Malaysia weather is hot 7/24 365 days
Note: I will check if it's still working though, since no incidence they might not have try playback.
If hot weather area,it is better to find one capacitor based dashcam,such as A119/Mini 0906/B1W