Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Wonderful! Useful!

This is the neatest little invention ever!The Problem: How to read when others in the room say lights out? Also, How to read in the car after dark w/o bothering the driver?The answer: The Itty-Bitty book light!It clipps to the cover of your book shines a suprisingly bright splash of light directly on your page. No more aiming a flash light with hand and a book with the other!Another importent feature is that the it won't light the whole room. It shines directly at your book and only your book.Lastly, It works with batteries for the plane/train/car or save your $'s and run it off AC at home.One Flaw that makes it only 4 stars, it uses a funky, hard to find special bulb. At least it comes with 2!