SanDisk Extreme 64GB CompactFlash CF Memory CardExceptional Shot to Shot Performance Read speeds of up to 120MB s and write speeds of up to 85MB s Professional Grade Video Capture VPG 20 ensures sustained data recording rate of 20MB s for a smooth and unbroken video stream Durable Design Backed by rigorous stress, shock, and vibration testing and includes RTV silicone coating for protection against shock and vibration lifetime limited warranty The optimal combination of shot speed (up to 85MB