When you go to a sauna or a large public bath, you sometimes lose track of time, right? Especially in places you're not used to. That's why a smartwatch is highly recommended for sauna and bath enthusiasts. The color is black. Please check the photos carefully before purchasing. Personally (in the third photo), I previously purchased a different color and always use it in 90-degree dry sauna rooms and salt sauna rooms. Of course, it can also handle temperatures over 90 degrees (up to 110). Compatible with iPhone and Android. Japanese language support. Basic Usage: The smartwatch vibrates to notify you of incoming calls, LINE messages, and emails. You can also monitor your sleep environment, such as deep sleep and light sleep. ⚫︎ Smartwatch, wristband type ⚫︎ Includes charging cord ⚫︎ Waterproof ⚫︎ Watch with a 1.47-inch large screen, full touch Smart Watch ⚫︎ Incoming call notifications 24 hours a day ⚫︎ Sleep tracking ⚫︎ Multiple sports modes ⚫︎ Weather forecast ⚫︎ Customizable watch face ⚫︎ Includes Japanese instruction manual ⚫︎ Blue cloth Sauna Watch