Professional grade 256 GB CFast 2.0 card. SanDisk CFast 2.0 cards have an extended temperature range below freezing, which makes them a good choice for cold weather conditions. Recording capacity at 24fps: approx. 24min ARRIRAW 2.8K; 15min ARRIRAW 3.4K OG; approx. 27min Apple ProRes 4444 16:9 4K UHD Note: Only supported by ALEXA Mini and AMIRA. This card is not supported by ALEXA XT or ALEXA SXT W. This card is identical to the retail version. SanDisk Product Code: SDCFSP-256G (D)