I bought this a few years ago on Amazon for around 10,000 yen and used it to connect my bedroom and living room in my apartment. I didn't like that my phone would be unusable when connected, so I bought one with a monitor. It works without any problems. However, the picture quality is inferior compared to the latest models ヽ(´o｀； There's no lag, and you can adjust the sound, and you can hear even quiet sounds, so there's no problem. If you're okay with anything that works! Please take this hand-me-down for my child m(_ _)m