This kind of LED Light for Bicycle gives you the excellent brightness in the dark or in strong backlighting with this long-lasting LEDs that features color balance. The LED light fits easily on to your bike and give you extra safety while cycling at night. The lamp holder side is transparent with aura， which can shine and make cycling more secure and smooth. You don’t need to worry about in the rainy day for its waterproof features.                                    Features            Double sense (sensitive Vibration and Light)<br>4 Red English letters and automatically change: I LOVE YOU; GOOD LUCK; HAPPY NEW YEAR; WELCOME<br>Waterproof， mouth for the United States and Britain need to install the converter mouth<br>Now on the market are single-sided， and can only see one side. And our latest product is the double of this. When you ride， the way people can see words on both sides<br>Catch everyone&acute;s eyes by sparking charming light at nights<br>Perfect for bicycle， motorbike， cars<br>Let the positive side of battery down when install it<br>                                                            Specifications                    Key Features        Wheel Tyre Flash Light      <br>        Light Color        Red      <br>          Battery        3 AG10 button batteries      <br>      Body Material        High-strength PC      <br>        Service Life        100，000 hours       <br>        Dimensions        2.91" x 0.63" (L x Dia.)      <br>      Weight        0.6oz / 17g      <br>      You can use it for        Riding， driving      <br>                                                            Package Includes            1 x LED Bicycle Light Hot Wheels letters Red<br>3 x AG10 button Batteries<br>