Clip on Dog Collar LED Lights By ZoroPlan - Safety Dog Collar 4 Pack Bundle (White + Green + Rose red + Blue Safety Light) - Stainless Steel Carabiner Clasp - Water Resistant And Batteries Included Very bright flashing LED light can be seen up to 1/2 mile away. Secure stainless steel spring clip to easily attach to your dog's collar. 4 Settings - Steady On, Slow Flash, Quick Flash, Off; Cycle Through By Pressing Center. Battery runs up to 30 hours (Battery included).Water resistant. Dog collar blinker lights comes with four colors - white, green, rose red and blue.