Review on 📱 Ultimate Smartwatch for Men: Bluetooth Calling, Fitness Tracking, Heart Rate Monitoring, Music Player, Sleep & Swim Support - Compatible with Android & iOS (iPhone, Samsung) by Tim Larsen

First, it's not really IP68. The instruction manual says you shouldn't wear it in the shower or even walk around in the water, let alone swim. It plays MP3s from the built-in memory that you transfer to it with a very good USB charging dock, but only plays 44kHz with no problems. . Many of mine are 48kHz and I had to hide them using a macOS app. More serious problems with MP3: The watch cannot handle it (MP3 playback via Bluetooth headset) and also track your training. The connection to the headset breaks off after about 20 minutes and is only restored after you wait about 10 minutes. Those numbers get better if you're not tracking your workouts, but that's the whole point of a fitness watch. Apart from that, they are attractive, especially with skin. Bands, steps and heart rate seem pretty accurate, BP readings I'm not sure about but they are there. There is a setting to automatically measure these values every 10 minutes. I think it's not continuous when you're not working. The touch screen is nice and bright. You can download different watch faces. But I ended up sending them back due to water resistance and MP3 issues. For someone who doesn't care that much about them, it can still be worth the money.