Products for: Outdoor sports・ sun・ tour recognition<br />LED fiber optic light guide fiber.<br />the flash mode: bright・ flash・ off.<br />light colors: red・ green and blue<br />the use of ultra fresh products・ the CR2032 lithium battery・ continuous use up to 72 hours. (battery replacement)<br />Material:cotton.<br />With Free Size・Adjust the control<br /><br />NOTE:There are two switches in the hat.One is in the battery case・you need to switch on first.<br />And then push the &quot;press here&quot;on the visor.<br /><br /> Package include:<br />1x cap