Because of the reflection of the guests, the rotating dial has quality problems,So we upgraded the product.The product upgrades, the function is more powerful,there is also a slight change in appearance.Two dial styles are shipped randomly.If you mind, please do not order.COMPATIBLE WITH ANDROID AND IOSThe S2 is compatible with both Android and iOS smartphones.Circular InterfaceA revolutionary design keeps everything you need at your fingertips. The circular interface let you navigate through notifications, apps and widgets quickly without covering the display.Network ConnectivityOnce paired with a compatible phone, network connectivity lets you call, text, and receive notifications directly from your wrist——even when your phone isn’t close at hand.DesignWith elegant curves and premium finishes, function meets style in the S2. Personalize it with custom watch faces to create a smartwatch that is uniquely your own.Easy-access NotificationsGet notifications from your phone right on your wrist with a glance. With the S2, you can receive calendar notifications, texts and even news updates.App PartnersWe’ve partnered with many of the apps you love, so now you can get to them without having to reach for your phone.PERSONALIZEWATCH FACESSwitching watch faces is ever so simple. Customize it down to the last detail from the dial, the hands to the complications. Whether you’re looking to don a classic look for that all-important meeting or dress it down with a fun watch face for after work, it’s all done in no time.PowerStay in the loop, keep fit and even buy a latte with S2.PartnersWe’ve partnered up with a growing portfolio of amazing apps to make S2 work for you. From going the distance to keeping your home secure, everything is possible.* Services may vary depending on carrier and country.DimensionBT 42.3 x 49.8 x 11.4 mmBT classic 39.9 x 43.6 x 11.4 mm3G 44.0 x 51.8 x 13.4 mmDisplay1.2” Full Circular sAMOLED360 x 360 (302ppi)Note: Doesn't have an app store to download apps.Sim Slot onlyCan be connected to a Wifi