This rear bike taillight is a must - have for safety. It features two high - output surface - mounted LEDs with both steady and flashing modes, making you highly visible on the road. With 160 degrees of visibility, you can be seen from multiple angles. It's water - resistant up to the IPX3 standard, so it can withstand light splashes. It runs on a single CR2032 battery, which is included. The rubber stretch strap makes it easy to mount on your bike.

Using this bike taillight is a breeze. First, take out the taillight from the box. Then, use the rubber stretch strap to attach it firmly to the rear of your bike. Before mounting, make sure the CR2032 battery, which is already included, is properly placed inside. You can switch between the steady and flashing modes according to your preference. When it comes to maintenance, keep it away from heavy rain as it's only water - resistant to the IPX3 standard. If the light starts to dim, simply replace the CR2032 battery. And always check the mounting strap to ensure it's tight and the taillight is secure.