Klein Tools’ Cap Visor Led Light Allows You to Easily Add Light to Any Hat or Cap When You Need Light But Don'T Want A Traditional Headlamp. The Metal Clip On Klein'S New Headlamp Is Contoured to Fit Securely Onto The Visor Of Your Cap. Powered By Two AAA Batteries, This Sturdy Light Also Has A Pivoting Head to Direct The Bright, Five Leds Right Where You Need Them. Our New Cap Visor Lights Are Perfect When You Need A Light For Your Other Work Hat.