Blue LED light made by Panasonic, with an ON/OFF switch and easy clip-on attachment. Batteries included. Hands-free light, allowing the use of both hands. Clip-on design allows attachment to various items besides clothing. Flexible angle adjustment. Splash-proof design for use in the rain. Size: Approximately W34 x D35 x H50mm Uses two Panasonic coin-type lithium batteries (CR2032). Thank you for viewing.