Unique LED Lights Stylish comfortable Stylish Cute Pet Dog Cat Collar Nylon 2.5cm Wide Size S:2.5cm/0.98inch(Width); 35cm/13.78inch - 43cm/16.93inch(Length Min.- Max).Please make sure this size will suitable for your pet before ordering. LATEST TECHNOLOGY OFFERING BEST VALUE - 2PCS CR2032 Button Battery Powered (pre-installed). Battery Life: 60-80 Hours; about 2-3 Months for normal using. INNOVATIVE DESIGN & PREMIUM QUALITY - fully adjustable, easy to put on & use, comfy, one click mode selection (always on, rapid flash, slow flash), with a quick-release buckle,an enclosed battery case & switch for added protection & a better look, & super-strong 100% nylon webbing with high-tensile stitching for maximum strength & dog security. WEATHERPROOF - good for all weather conditions, the collar is water-repellent, it has rust-proof components, & it is lightweight, strong, durable & built to last with only the best top quality materials & components. Lighting Length: 30CM/11.81inch. Designed with 3 Different Lighting Modes: Quick flash,Slow flash,Constant lighting.(Controlled by switch)