Feature 1 3 Fan Design: This safety helmet fan comes in a set of three, which are aimed at the head, neck and face respectively to achieve efficient cooling. 2 Excellent PP Material: This safety helmet fan is made of excellent PP material, which is sturdy and wear resistant, not easy to be damaged, and it is high temperature resistant and light weight, which doesn't add burden to your head you. 3 Quiet Running: This safety helmet fan runs with little noise, which will not affect your normal work and does not add burden to your ears. 4 Fit Hat Shell: This safety helmet fan can fit the shell perfectly, which can reduce the collision and make it more durable. 5 Long Endurance: This safety helmet fan has a highly efficient modular battery that can run for up to 6 hours on a full charge, making it very useful.Item Type: Safety Helmet FanMaterial: PPBattery: Lithium Ion Battery 2000mAh (1 Built In Battery and 1 Replacement Battery ) Package List1 x Safety Helmet Fan1 x Battery ( Color Random )2 x Charger2 x Strap2 x Stand4 x U Buckle