LED Flashing, Waterproof, Nylon Dog Leash, 2 Rotating Connectors, Size Large LED Flashing Black Nylon Dog Leash with Glowing LED Lights Two 360 Rotating Connectors move with your Dog, making it easier to control Large Size is 1 Inch and 4Ft Long, Perfect for Walking! Includes 2 CR2032 Battieries. Easy Battery Replacement, no screwdrivers necessary Push LED Switch Once - Fast Flash Setting; Twice - Slow Flash Setting; Three Times - Steady Glow; Fourth is the off position.