Tracking Sensor: MAX BC3332-A 12K Sensor Resolution: 100~12,000 CPI Frame Speed: 8000 fps Acceleration: 35 g Tracking Speed: 250 ips Response Report Rate: 125~2000 Hz Key Response: 1 ms Durability Button Lifetime: Over 50 Million Clicks ( Left / Right Button ) Wheel: Over 500,000 Scrolls Metal X'Glide Armor Boot: Over 300 Kms