FIT STANDARD SPOKE BICYCLES, 16 INCHES & ABOVE - not suitable for bicycles with wide spokes or sparse spokes. Awesome Festival or Birthday gifts for boys, girls, men, women, kids, everyone. Professional customer service. If this DAWAY A12 bicycle spoke lights have any quality problems within 6 month, pls contact us for after-sales service, we will help you solve it and make you satisfied. MINI SIZE, LIGHTWEIGHT & WATERPROOF - include 2 pieces bike wheel lights for 2 tires, battery included, easy to install and remove! DAWAY A12 bike tire light is 3.74*2.76*0.59 inch(W*L*H), weighs only 2oz, safety cute design, won’t affect cycling speed and gravity force. Can be used in any weather conditions, but pls don’t soak the bicycle tire lights in water. INTERESTING PATTERN EFFECT SHOWN DESIGN - controlled by riding speed, as picture shows, the faster you ride, the more complete and beautiful the patterns are! When riding speed reaches 18.6 mile/h, the patterns will become complete, cool & perfect. If speed is below 18.6 mile/h, the bicycle wheel lights will show half or part of the pattern. Fun pattern effects. AUTOMATIC LIGHTING, WITH MANUAL SWITCH - energy saving and convenient! DAWAY A12 bike spoke lights are controlled by motion sensor & manual, differs from other bike wheel lights. After the bike spoke lights are installed, long press "on/off" button for 2 seconds, enter auto mode. At this time, light glows when bike moves, turns off after stop moving for about 30 seconds. You can also long press button for 2 seconds again to turn off the bicycle spoke lights immediately. Easy to use. COOL VARIOUS PATTERNS, BRIGHT & SAFETY - great gift for night riding! Each DAWAY A12 led bike spoke light is made of 14PCS RGB Leds, can be seen from both sides, each led can flash 8 colors, high brightness, ensure your bike visible at night. Moreover, this led bike wheel lights can flash 30 different patterns, patterns change every 4 seconds. Be safety! Be cool.Special Feature: Portable, Water-Resistant, Waterproof, Lightweight. Fit Type: Tandem Bikes. Included Components: Batteries. Auto Part Position: Left. Recommended Uses For Product: Cycling. Light Source Type: LED. Voltage: 12 Volts. Vehicle Service Type: Bicycle. Brand: DAWAY. Item Dimensions LxWxH: 2.76 x 3.74 x 0.59 inches. Date First Available: August 15, 2017. Best Sellers Rank: #7,819 in Sports & Outdoors. Customer Reviews: 4.1 out of 5 stars 2,571 ratings 4.1 out of 5 stars. : B074359W73. Skill Level: ?Advanced, Beginner, Expert, Professional. Sport Type: ?Cycling. Part Number: ?DW - A12. Manufacturer: ?DAWAY. Suggested Users: ?Youth, Unisex, Boys, Girls, Mens, Womens. Model Name: ?DW - A12. Warranty Description: ?6 Month Warranty - If have any problems, pls contact us, 100% refund or replace. Brand Name: ?DAWAY. Package Weight: ?0.12 Kilograms. Item Package Dimensions L x W x H: ?6.46 x 5.28 x 1.65 inches. Number of Pieces: ?1, 2. Remote Control Included?: ?No. Water Resistance Level: ?Waterproof. Item Weight: ?2 Ounces. Special Feature: ?Portable, Water-Resistant, Waterproof, Lightweight. Fit Type: ?Tandem Bikes. Included Components: ?Batteries. Auto Part Position: ?Left. Recommended Uses For Product: ?Cycling. Light Source Type: ?LED. Voltage: ?12 Volts. Vehicle Service Type: ?Bicycle. Brand: ?DAWAY. Item Dimensions LxWxH: ?2.76 x 3.74 x 0.59 inches.