Extreme PRO 64GB Compact Flash Memory Card Item Dimensions: 43 mm (width) x 36 mm (high) x 3.3 mm (thickness) cf card Designed to meet the rigorous requirements of professional photographers and videographers, the Compact Flash Card delivers the sustained write speeds to capture cinema-quality 4K Ultra HD and Full HD video (3)., this card also features Video Performance (VPG-65) (2), which ensures smooth video capture. Additionally, write speeds of up to 160MB/s (1) allow photographers to shoot in continuous burst-mode, capturing multiple frames per second without lag time and a storage capacity of 64GB (4) means professionals can keep shooting videos and photos without stopping to change cards.