Instruct: Classify a given review as either positive or negative.
Query: Non-working watch

I have had two other virtually identical watches (started out using them as dive watches but wound up using them as my regular watch. The latest one I ordered arrived promptly; I started it up, set it; it ran for five hours and stopped. I reset it; it ran another four hours and stopped; I sent it back, and received a refund promptly. Do't know if I'll try to buy another.