1. You can change 10 colors. - You can change it in Customize. 2. We support the 12-hour system and the 24-hour system. - If you change the settings of the smartphone connected to the watch, the watch will also change. 3. Please check the exact location of the shortcut in the attached image. * If the android play store showing app as not compatible, use web browser to install. *This watch face supports wear OS devices. Get new news from my Instagram. www.instagram.com/hmkwatch Please send me an email if you have any errors or suggestions. [email protected]