Awesome triple-LED performance at an economical price. The Omni 3 rear light tail provides 360 degrees of visibility and New Omni Directional Technology increases safety while three modes – rapid, flashing and constant, let you decide how flashy you want to be. Two AAA batteries provide up to 200 hours of run time. CatEye exclusive FlexTight bracket and included clothing clip allow you to mount the Omni 3 virtually anywhere you’d like. Dimension: 36.0 X 75.0 X 21.9mm Weight: 41.6 grams (light unit and battery) Light source: Red LED X3 Battery: AAA alkaline battery X2 Runtime: Approx 100hrs in constant, 150hrs in flashing, and 200hrs in rapid mode Mount size: φ12.0~32.0mm (FlexTight SP-11) Other: Clothing clip included