COFFLED1pc LED Flasher Pet Dog Blinker Circular Light Pendant Collar Buckle Clip Safety New and high quality Weather resistant Secure stainless steel spring clip easily clips to the D-ring on your dog's collar Push button switch Glow and flash modes Glow mode: 30 hours Flash mode: 35 hours Easily replace batteries design Product Specification: Color: Orange/Pink/Red/Green/White/Blue Battery required: 1x CR2032 or 2x CR2016 (Battery included) Dimensions: approx. 32mm*19mm(Diameter and thickness)