Absolute favorite pencil, mechanical or otherwise!! I saw it on a show about Japanese design innovations - claims that it does not break while writing. Well, it will if like me you put the led out far enough and keep trying to mess with it (a "Uh, duh..." moment on me.)If you at all like mechanical pencils, this is really one is for you!! (Also, its worth checking out the NF show on the design and how they made it.)