OGYA Bicycle Tail Light Mountain Bike Silicone Sixth Generation Frog Lamp Bicycle to Decorate Safety Warning Lights Car Headlights Flashing Lights Bicycle Tail Light Car Headlights Flashing Lights Mountain Bike Silicone Sixth Generation Frog Lamp Bicycle to Decorate Safety Warning Lights Light source: 2 LED bulbs Power supply: 2 * CR2032 battery (including Function: dustproof, shock resistant,waterproof.Brightness range: 300 meters