Abstract: A mask includes a body with a goggle engaged connected thereto and the goggle includes a first connection portion and a second connection portion on an inside of a frame of the goggle. A first connection plate and a second connection plate each have a pad connected on an inside thereof. The first and second connection portions each include holes and the two connection plates have protrusions which are removably engaged with the holes in the first and second connection portions.

Abstract: A mask includes a body having a through hole with which a goggle is engaged. Two first holes are defined in the body and located on two ends of the through hole. The goggle includes two side parts which are located on inside of the through holes. Two positioning plates each have a first positioning hole and a second positioning hole which communicates with the first positioning hole. Two locking members each have a protrusion which extends through the first hole, the side part and the first positioning hole, the positioning plates are then pulled to shift the protrusions to be engaged with the second positioning holes.

Abstract: A paintball gun with a synchronous setting unit. The paintball gun includes a gun grip and a first setting unit disposed in the gun grip. The first setting unit is composed of an input element, a calculation element and a communication element. The first setting unit transmits a signal in a wired or wireless manner through the communication element. The first setting unit and a corresponding portable second setting unit respectively set and transmit a parameter signal for the paintball gun. Thus, a user may rapidly and remotely set parameters according to the live situation so that the user's mobility and the convenience are greatly enhanced.