I bought this about two years ago. I bought it as a replacement because the other baby monitor I was using broke, so I haven't used it for very long. The purchase price was 8900 yen. Operation has been confirmed. It's not that high-performance, but I think it's sufficient for monitoring when the baby is sleeping. It doesn't respond to movement, so it becomes useless if the baby moves, but I think it's a relief to have it for naps or a short time at night ^ ^