When I first put them on my bicycle nothing happened. I grabbed some batteries from the house and lights auto blinked to let me know they were active. I rode it around then watched my GF ride it. Really cool. It's gonna really help out on my beach vacation. 100% satisfied !
Smart bracelet Xiaomi Mi Smart Band 6 CN, black
50 Review
Segmented Beaded Kids Jump Rope For Exercise And Outdoor Activities - Durable And Shatterproof - Easily Adjustable And Light Weight Skipping Rope For Kids
48 Review
Portzon Women'S Waist Trainer: Weight Loss, Sweat Belt, Sauna Trimmer, Tummy Toner, Lumbar Support
47 Review
Stay Comfortable And Stylish With DASUTA Sweatbands For Women And Men
55 Review