Dunlop rear light This rear light from Dunlop has five super bright, red LEDs, making you clearly visible in the dark. With the handy mounting bracket you can attach the lamp to your seat post without tools. Specifications: Color: white Material: Plastic Type of lighting: LED Power supply: batteries Batteries: 2 x AAA (not included) Position: seat post Functions: 4 Dimensions: 10.5 x 2 x 4 cm Clamp diameter: 22.2 - 34 mm Waterproof With on/off button