Product Name Leadbike Bicycle Valve Light A08 Material PC/Aluminum Battery Type 3*AG13 button battery ( battery included) Product Size 7.5cm Waterproof Rate IPX5 LED color White/Blue/Pink The product is consist of 7 pcs monochrome LEDs It can flash 15 different kinds of patterns or 4 different kind of letters patterns, patterns will be changed every 3 seconds. Pattern is clear and completely when speed up to 25km/h. Equipped with light sensor and movement sensor, flash only at night and action. Only at night,indoor or low light and the bike moving dual situation the lamp will light. Both schrader valve and presta valve are available. The outter is presta valve of the conversion mouth,aftering spinning off the mouth,it is schrader valve. When riding, the positive effect of light may be brighter than the opposite,but it will not affect the results It will not work and save power when not riding Product Name Bicycle Valve Light Length 94mm Battery Lithium Battery Applicable Tire Valve US/UK Valve Color White, Purple, Blue Pattern Display 15 kinds Product Description