I bought this clock early in the pool season of 2018. I hung it outside, and it worked very well, for about 3 weeks. Then I noticed it was losing time / running slowly. This shouldn't be since I installed it with a fresh battery, but I changed the battery anyway and it kept running slow.Fast forward a few months. Pool season ends and I bring the clock inside for the fall/winter/spring. I just lean it against the wall in my home office. It keeps time PERFECTLY for that whole 8+ month time period.I hung it back outside 4 weeks ago. It worked fine for 3 weeks or so, then it started running slowly again and losing time.So all I can conclude is that somehow being exposed to the weather (temperature and/or humidity variations) screws up the timepiece...which is pretty BAD thing to have in what's supposed to be an outdoor clock.Look's great, but doesn't work for why I bought it.UPDATED INFORMATION: Skynature contacted me within hours of this review being posted, asking what they could do to rectify the issue. After 1 or 2 replies, they have said they'll send me a replacement.SO I'm not YET going to change my overall rating, but may up it once I verify that the replacement works as intended. However, I can comment VERY POSITIVELY on their customer service. They'll take the steps needed to keep a customer happy, and I'll update my stars accordingly once I've had a chance to experience the replacement.UPDATED INFORMATION, August 2019 (about 45 to 60 days later). Sky Nature corrected the situation. I got a new clock sent to me, even though I was likely out of the warranty period for my original purchase. It's been outside in the sun, rain, wind and even some slightly chilly nights here and it's NOT losing time like my first one was. And it's still a good looking clock hanging out there on the pool shed.Since they did have the original issue, I'd prefer to call it 4.5 stars instead of 5, but I went ahead and rounded up as the customer service response showed that they DO want to satisfy their customers.