heytech led mask halloween scary mask cosplay led costume mask light up for halloween festival party(green) heytech <b>unique fashion mask</b><br> color: 6 colors. <br> the mask control have 4 modes: steady light,slow flash,fast flash,off.<br> unique fashion mask,comfortable, comfortable, padded fit conforms to the curves of your face. <br> clip the power pack to your pocket or onto your clothing. takes two aa batteries (not included).<br> perfect gift: perfect for halloween, costume parties, masquerades, mardi gras, rave festivals, carnivals, gifts, birthday and events</p> <b>note :</b><br> <b>that all glow wire battery packs in the industry make a slight high pitched tone and this is normal. for this reason, we've found that it is best to place the battery pack in your pants/shorts pocket to muffle the sound.</b>