EverBrite 2-Pack Rechargeable Hat Light, Waterproof Clip on Cap Light with Memory Function, Red Light, Pivoting Head, IPX4 Water ResistantHands Free: LED cap lights allow you to easily add to any hat or cap when you need light but want something other than a traditional headlamp. They are contoured to fit securely onto the visor of your cap. They also have a 45 pivoting head to direct the bright four LEDs right where you need them. The memory circuit always turns on at the brightness setting last used. 5 Lighting Modes: High, Medium, Low, Red Light, and Red Strobe. The cap light has a