DetailsSuperflash:~ Half-watt Blazeª LED plus 2 eXtreme LEDs for visibility up to 1 mile. Flashing and steady mode. "SuperFlash" mode is highly visible, even in daylight. Ultra compact vertical design is weatherproof, lightweight and durable. Includes bike mounts and clip mount. Up to 100 hours of run time on 2 AAA batteries (included).