*Each of the upgraded HD1079PRO has been professionally tested and its shock resistance has reached 800g*The UUQ HD1079PRO puts an unmistakable red dot at the point of impact within your field of view, giving you an immediate advantage in speed and accuracy*UUQ optics are manufactured using optical glass with multi-layer coatings applied to facilitate maximum light transmissionMulti-layer Coating7-Level Brightness Adjustment Function4 Kinds of Screws and 3 Sizes of Wrenches