Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Good idea - bad execution

Based on a glowing online review I found during a recent visit, I ordered this book light for my step-daughter so she could read at night while nursing her 2-month old daughter. She returned it after one night of fruitless experimentation and inconsistent lighting. The killer flaw seems to be the design of the battery compartment: every time she would turn a page, the batteries would jiggle and the light would flicker or go out. A maddening distraction for both mother and baby... The replacement product is the Mighty Bright Flex2 which, though bulkier, works like a charm. Don't buy this product: for about half the price the Flex2 is by far the superior book light.