The BlackVue 256GB microSD cards are optimized to work with all BlackVue and other dash cams Memory cards are covered by a 6-month warranty! The new high-capacity 256GB microSD doubles the recording time for your BlackVue dashcam as compared to the 128GB model. It is compatible with all the following dashcams in the BlackVue lineup: DR900S-1CH/2CH/2CH IR DR750S-1CH/2CH/2CH IR/2CH TRUCK DR590W-1CH/2CH/2CH IR DR590-1CH/2CH/2CH IR