Simson Simmy lighting set These handy lights can be easily attached to the handlebars using the universal mounting straps. The lights have an on, off and flashing function and produce a high light output, so that you are clearly visible! Specifications: Front light colour: grey Rear light colour: red Material: aluminium/silicone Type of lighting: LED Power supply: 4x button cell batteries (included) Mounting: handlebar/seat post Front light light output: 29 lux Rear light light output: 13.5 lux Contents: 1 Front light 1 Rear light 4 CR2032 batteries