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: flashing - always bright - off, 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. Spec:Material: ABSColor: Colorful / Red / Blue / Orange / Pink (Optional)Product Size: Approx. 5.7 * 3.5 * 2.5cm/2.2 * 1.4 * 1.0inLighting Mode: Quick Flash, Always on, OffWorking Voltage: 6VBattery Capacity: 20mALED Lamp Power: 0.06WLuminescence Time: Quick Flash: 150 Hours, Always on: 100 HoursBattery: 2pcs * 2032 Button Batteries (included)Package Weight: Approx. 35g/1.2ozPackage list:1 * Pet Luminous PendantNotice:1. Please allow slight error due to manual measurement.2. Different monitor colors may be different. Thanks for your kind understanding.