1---5 lighting modes: the clear LED indicators can show a left indicator, a right turn indicator, a steady red light, a breathing red light, a red and blue strobe, a double flash, offering a full range of visual warning effects.<br> 2---Wireless remote control: with 4 easy-to-use buttons on the controller, the bike helmet remote control sends signals in different modes. There's no need to lift your arm to signal direction, adding safety to your ride. (Please remove the battery insulator from the remote control before use)<br> 3---USB charging: the bike tail light has a built-in 300 mAh battery, which can be charged via the included charging cable. Charged for 1.5 to 2 hours, it can operate for approximately 4 to 5 hours.<br> 4---Waterproof bike tail light: can withstand rain and wet weather, can be used normally in the rain, which is the best companion for outdoor cycling.<br> 5---Easy to install: strong Velcro design, stable and will not fall off, and no installation tools are required. Installation method: 1. keep the installation area clean, 2. remove the protective paper and stick the Velcro to the helmet.<br> Features: 40g (1pcs)<br> Colour: Black, Blue, Red<br>Note: <br>1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. <br>2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you!<br>About Shipping: <br>1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly.<br>2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.<br>3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 630 hours, wish you a happy shopping!