Cateye omni 5 front lightfive bright leds deliver great brightness with impressive runtime'. '.strtoupper('n')ew omni directional technology increases safety while three modes rapid, flashing and constant, let you select the right level of visibility'. '.strtoupper('w')ith two aaa batteries, the omni 5 will run up to 120 hours'. '.strtoupper('t')he simple, tool free flextight bracket and included clothing clip allow you to easily attach the omni 5 anywhere youd like.features dimension 36.0 x 75.0 x 21.9mm weight 41.8g light unit and battery light source white led x5 battery aaa alkaline battery x2 runtime approx'. '.strtoupper('4')0hrs in constant, 120hrs in flashing, and 40hrs in rapid mode mount size φ22.2～32.0mm flextight sp 12 f other clothing clip includedbuy cateye accessories from chain reaction cycles, the world's largest online bike store.