I tried contacting the manufacturer ('Karlsson' ➔ 'Present Time') via both phone and email. I do not know if it occurs at a specific time. This would last around 5 seconds, and during this period is when the clock seems to freeze a minute. It isn't loud, but noticeable compared to the usual, quieter ticking sound. Once or twice every day I can hear a strange machine-like grunting sound coming from the clock.
It's been hung on a wall for all this time. I've done no other modifications to this device, nor have I dropped or damaged it. Once in June 2019 (low battery), and once in May 2020 (issue troubleshooting). So far, I had only changed the battery twice. I tried changing the battery, but the issue persists. I would have to adjust the clock more often and by last month I would set it five minutes ahead, and by three days it would be the correct time, then three days later it was five minutes behind. I didn't care for it much since it would be out-of-sync a minute every week, but as it went on the lag occurred more often. So around 6 months ago, I'd noticed this clock began lagging by a minute and assumed it was due to indoor temperature fluctuations or strange battery. Purchased : December 2018 via Online Order (Wayfair) Item : Karlsson Flip Clock No Case, Black (KA5601BK)
