Pet Leso Pet Safety LED Flashing Collar Tag Dogs Cats Custom Pendant This tags not suit for very small cats or pets, Length:2'', diameter: 1.4'',thickness: 0.7'' Three modes: Steady On/Flashing/Normal flash Over 100 hours of flashing light with each one. With a keychain,this toy can be used as pet tag or key ring This Led tags can sign your name and phone and make sure your pet is safe in the dark.