Elastic Mounting LED Light Flexible rubber bands, easy to fix on handlebars. AAA batteries provides convenience to find replacements, while bigger switch button makes it handy. ACC-160 • Bulb: Super Luminosity White LED x 2 • Battery: LR03( Size "AAA" ) x 2 • Full Power, Half Power, Flashing • High-Output: Full Power 10 hrs • Steady High-Output: Half Power 25 hrs • Flashing 80 hrs • Color: Black, White • Size: 74 x 36 x 45 mm • Weight: 52g