Instruct: Classify a given review as either positive or negative.
Query: Have to use a timer

We bought this to take camping. Our 9 month old has a HomeMedics white noise machine in his room that we leave on overnight (love it). For camping we wanted a portable one. Our first camping trip, he'd wake up somewhere new and freak out (that led us to buy this product). We took this one on our second trip. This machine worked great. EXCEPT there is no way to use it without the timer! It shuts off after 45 minutes no matter what you do! He woke up about once/hour. If hadn't recycled the packaging already, we'd be returning this. Very dissatisfied.