CAT EYE OMNI3 AUTO Tail Light, 36mm X 75mm X 21.9mm, TL-AU135-R, Bicycle Light

Battery-powered automatic safety light. The sensor detects brightness and vibration and automatically turns the light on and off. It stays on for approximately 50 seconds after standing still, ensuring safety even when stopped at traffic lights, etc. Long battery life of up to 350 hours. Features three modes: rapid, flashing, and steady. The mode memory function ensures the light starts up in the mode it was in when it was turned off. Includes a FlexTite Bracket (SP-11) that can be quickly and securely attached to the seat post or seat stay without tools. Compatible with diameters of 12-32mm. Includes a clip (C-2) that can be attached to a saddlebag or backpack. Use the steady light when riding at night. Under road traffic laws, flashing lights must be used only as auxiliary lights. When using flashing lights, use them in conjunction with a red rear reflector. Dimensions: 36 x 75 x 21.9 mm Weight: 41.5 g (including batteries) Batteries: Two AAA batteries Running Time (with alkaline batteries): Steady: Approx. 100 hours, Flashing: Approx. 200 hours, Rapid: Approx. 350 hours Compatible Mounting Diameter: 12-32 mm