1.no harmness 2.with high bright 3.protect your pet safety in the night 4.can replace battery Led dog collar/led flashing dog collar/glowing dog collar/led pet collar1, Material:Nylon webbing +LED+plastic buckle+ optic fiber. 2, Flashing modes: constant lighting-fast flashing-slow flashing-off 3,Webbing color: red,blue,yellow,green 4.length: 1.5 x 18-27cm5.2 pcs CR2016 batteries Led dog collar ...