Auto · Dual-Channel Dash Cams (Front + Rear)
How big an SD card do I need?
Reviewer consensus
Most dual-channel 2K/4K cams in 2025 want at least a 128GB high-endurance microSD; 256GB is a safer minimum if you use parking mode, and the new SSD-capable models like the Viofo A329S can take far larger storage. Always use a high-endurance card rated for dash cam or surveillance use, standard consumer cards fail quickly under continuous loop recording.