(1) Up to 550MB/s read transfer, write transfer speeds lower. Speeds based on internal testing. Actual performance may vary. (2) Comparison based on internal testing. Actual performance may vary. (3) Shock resistant (1500G, duration 0.5ms, Half Sine Wave) and vibration resistant (7~800Hz, 3.08Grm, 20G, 1 Oct/min, 30min/axis(X,Y,Z)). Based on internal testing. Actual performance may vary. Actual usable memory capacity may vary. 1GB equals 1 billion bytes.