Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Keep looking

Actually, this is about a predecessor model 1818 which was bad to begin with (poor tonal quality); the speaker then began fading in and out both for phone calls and for message replay, and finally, the buttons stopped working entirely --- all within the span of six years of fairly limited home use. When I compare this machine with the durability of my old Panasonic tape machine, which lasted over 15 years, I rate the AT&T product as wholly unacceptable. Even when new, the tone quality of the message recorder was so bad, it was often difficult to decode messages and, more importantly, call-back numbers.