Specifications: S, M, L,XL for customers to choose.

Pet Bust Size:

        S 2.5 (wide) * 35-43CM

        M 2.5 * 40-48CM

        L 2.5 * 45-52CM

        XL 2.5 * 52-60CM

Power source: LED light

Light color: white,Red, Yellow, Blue, Green, Orange, pink, colorful changed for you choose
Modes: Quick flash-slow flash-still on
Battery: 2 * CR2030 button batteries (pre-installed)

Easy to use: simply pushing the control button makes the light ON/FLASH/OFF.