Adjustable LED Dog Collar Glowing Anti-lost Night Safety Pet Luminous Collar Flashing Necklace for Small Medium Large Dogs Cat Life-grade waterproof material Detachable electronics for easy cleaning, suitable for dark environments or nighttime dog walking Precision craftsmanship with multiple lighting modes to enhance your pet's visibility LED flashing design, shockproof, with adjustable strap length Available colors: red, yellow, green, blue, pink Lighting modes: steady on, slow flash, fast flash (controlled by switch) Powered by 2PCS button batteries (batteries not included) Size specifications: XS: neck circumference 28-38cm, width 2.0cm, total length 41cm S: neck circumference 34-41cm, width 2.5cm, total length 44cm M: neck circumference 37-46cm, width 2.5cm, total length 50cm L: neck circumference 41-52cm, width 2.5cm, total length 56cm XL: neck circumference 42-56cm, width 2.5cm, total length 60cm Durable and adjustable design Made of high-quality nylon with a secure buckle Ideal for use in low-light conditions or evening walks Features ultra-bright LED fibers for enhanced visibility and safety Stylish and functional, helps your pet stand out Package includes: 1 x LED collar