Features: Fashionable, waterproof, simple, generous and compact design. With hanging buckle, it can be hung on the collar for easy outing and easy to wear. Lightweight and water resistant clip light makes a perfect alarm signature and good protection for your dog at dark night when she or he is playing outside. Illuminated pendant, lighting mode: fast flashing and slow flashing, can be selected as needed. Keep your dog safe at night and wear a light pendant to make your pets stand out at night and prevent them from being lost. With the option to turn the light off, this light up dog collar is a great choice for daytime walks as well! Built-in 2 button batteries, easy to disassemble and assemble. Specification: Material: ABS Color: Colorful / Red / Blue / Orange / Pink (Optional) Product Size: Approx. 5.7 x 3.5 x 2.5cm/2.2 x 1.4 x 1.0in Lighting Mode: Quick Flash, Slow Flash Working Voltage: 6V Battery Capacity: 20mA LED Lamp Power: 0.06W Luminescence Time: Flash: 150 Hours Battery: 2pcs x 2032 Button Batteries (included) Package Weight: Approx. 35g/1.2oz Package list: 1 x Pet Luminous Pendant Note: 1. Please allow slight error due to manual measurement. 2. Different monitor colors may be different. Thanks for your kind understanding. .