Product name: pet glow collarMaterial: polyester webbingColor: Red/Blue/Yellow/Green/Orange/Black/PinkThere are two versions of LED collars.1. USB charging versionOnce the light gets weak, charging will helpImprove battery life2. Button battery versionReplace the button battery when the power is offFlashing mode: long light/Fast flash/Slow flash (controlled by switch)Packing: One piece into one OPP bag, each piece has a size sticker and color stickerBattery: 2PCS CR2032 button battery driveBattery life: 30-40 hours, 2-3 months of normal use; the battery can be replaced by yourself, and it is available in convenience stores or supermarkets. Cleaning and detachable electronic parts This product is suitable for dark environments or walking the dog at night, outdoor and pet sports, it emits light through optical fiber, which plays a warning role, and it can be used by pets when the light-emitting function is turned on and off during the day or at nightPlease measure the circumference of your dog's neck and compare the size in the table below to purchase a suitable collarProduct Specifications:XS width 2.0CM telescopic range: 28-40CMS code width 2.5cm short 35cm long 43cm telescopic range 8cmM code width 2.5cm short 40cm long 48cm telescopic range 8cmL code width 2.5cm short 45cm long 52cm telescopic range 8cmXL code width 2.5cm short 52cm long 60cm telescopic range 8cmPacking method: OPP bag packing