Spanninga rear light O XB With the Spanninga O XB you will stand out! This rear light has a unique design and ensures excellent visibility on the road. It uses two energy-efficient LEDs that provide 50 hours of burning time. You can easily operate the rear light by pressing the special rubber button with the Spanninga logo. Battery almost empty? Then you can see this thanks to the handy low battery indication. Specifications: Color: black, red Material: plastic Dimensions: 6 x 5.5 x 4 cm (L x W x D) Lighting type: LED Power supply: 2x AAA batteries (included) Mounting: seat post Clamp diameter: 25-34.9 mm Contents: 1 Rear light 2 AAA Batteries