Got it for my wife.  She loves it.  Has two brightness settings.  Extremely bright at highest setting.  Batteries have lasted forever - haven't replaced them once yet.  The clip is very solid.  The only minor complaint might be that the base might be too light to simply set it on a desk and be able to move the light very far off a center point over the base.  But if they made it heavier it would be cumbersome when attached to a book which is how most people would use this.  Great product!