Aviditi BC406-S LED Lighted Dog Collar, Black with Red LED Lights Helps you and others see your dog while out on walks at night or in the dark 4 Different light settings: Slow-flashing, quick-flashing, non-flashing, and off (for daytime use) Lightweight, durable, weather- and water-resistant Color: Black with red LED lights Size: Small; Measures: 0.79-Inch by 13.8-17.7-Inch (2.0cm by 35-45cm)