Features High quality‎.‎Tire valve cap lights screw onto the valve stem of your car‎,‎ bicycles or motorcycle in seconds‎.‎Universal fitment and easy to install no special wires‎,‎ can be easily installed and removed‎.‎Fits most valves of road‎,‎ mountain bicycles‎,‎ motocycles and cars‎.‎Bright led will turn on while the vehicle is moving and off when stop‎.‎Silver body with ultra bright‎,‎ long life‎-span led lights‎.‎Car lights increase night‎-time and bad weather visibility for safety‎.‎Waterproof‎,‎ shockproof‎.‎Power by 3 x AG10 batteries‎.‎‎(‎INCLUDED‎)‎Size‎:‎ 7cm x 1.7cm x 1.7cm‎.‎ Fit for woods/dunlop valve‎,‎ schrader valve‎.‎ BUT NOT for presta valve‎.‎Importance‎:‎ The item color is red‎,‎ blue‎,‎ yellow or green‎,‎ but the light color giving off by this item is ALL Blue‎!‎