I needed a light for reading my Sony eReader Pocket Edition at night before retiring and couldn't find one bright enough. This certainly does the trick. It clips on the eReader cover snugly without slipping and doesn't make an indentation. The flexible arm is amazing and it provides a powerful light for such a little item. For anyone trying to find a light for their Sony e-Reader, this is the one for you. Believe me - I've tried quite a few before finding this little gem. It is fantastic!