Built-in Micro Fan, Powered by 3 AA batteries - (Batteries not Included) This Paintball Helmet Equipped with an electronic micro-fan with 3-speed adjustment, it can efficiently and silently exhaust the air in the goggles, solving the problem of glasses caused by long-term fogging of the mask. How to Control: 1, Frist Press: the fan is running in low wind mode. 2, Second Press : the fan operates in the second gear high wind mode. 3, Third Press: Fan stops and shuts down. Hidden High-fidelity Earphones needs work together with PTT - (PTT not included) The Tactical helmet has earphones that provide high-fidelity sound quality built in an integrated helmet. To increase the convenience of use and further expand the range of use, the earphones need to be paired with PTT. Multifunctional 3-in-1 Airsoft Full-Face Tactical Helmet, the mask/helmet/goggles together form a unified whole cool full-face helmet, worth having!