Avenir InterUrban Combo (109g/42g with battery & bracket) Four modes: 1LED Steady, 3LED Steady, 7LED Steady, 7LED Flash. Run time: 150hrs (1LED Steady) / 80hrs (3LED Steady) / 20hrs (7LED Steady) / 40hrs (7LED Flash). 3 AAA batteries included. Included bracket fits 25.4 to 31.8mm handlebars.