EAGWELL 2.5cm Width Nylon LED Dog Night Safety LED Collar Flashing Light up Circular Pendant Pet Collar Small Blue EAGWELL Brand New 2.5 Width Pet Dog LED Collar. Made of Hight Quality Nylon + Blue LED Light. Sizes: S(Diameter Min 11cm,Diameter Max 12.8cm) Pushing the control button fourth.It makes the fast flash,slow flash and steady close one by one. Your Satisfaction is our Highest Priority, Please contact us firstly if you have any question.