Pet Collar for Dogs and Cats with 3-Modes Orange LED Flashing Lights, Black Pet Collar for Dogs and Cats with 3-Modes Orange LED Flashing Lights, Black. Features: Exquisite LED pet collar which is visible in the dark, 3 Modes: Permanent light / rapid flash / slow flash. With one switch control, Made of nylon, Adjustable size, the maximum length is about 16.15". Dimension: Approx.14.6"-16.15"(L) x 1"(W), 2 CR2032 3V Button Cell Batteries (Included). 414-431-001.