LED Safety Electric Glow Collar Each LED Lights Collar is made of super-sturdy nylon and satin. 60 hours of steady light & 100 hours of flashing light. 3 Modes: Fast Blink, Slow Blink, Always On Replaceable Lithium Batteries (2 x 3V CR2032) Batteries Included Keep your pets safe and fashionable with these LED light collars. Made from quality nylon webbing and bright LEDs, your dog can be seen in low light and no light. A safety must for any dog out during or after dusk. Sports an easy-clip buckle and sturdy D-ring.