Simson rear light This battery-powered rear light from Simson has five LED lights and provides a super bright light. The light can withstand a knock, is splash-proof and comes with a holder. Specifications: Colour: red Material: plastic Dimensions rear light: 5 x 8 x 3 cm (L x W x D) Dimensions holder: 3 x 5 cm (L x W) Clamp diameter: 20 to 25 mm Lighting type: LED Product type: 020755 Suitable for mounting on the seat post. Contents: 1 Rear light 1 Holder 2 Batteries Mounting material