I have a used LG W100 Android Wear Smartwatch. It is compatible with Android 4.3 or higher and works with lots of Google apps, including Google Now, Google Hangouts, Google Keep, Google Maps, and Google Calendar, and a bunch of LG Apps, including Compass, health tracker, step counter, and World Clock. It is also compatible with Apple's iOS 8.2 or higher, though it offers limited functionality with iPhones. It has 4 GB of internal storage and 512 MB of RAM, a 1.65-inch LCD screen, Qualcomm Snapdragon 400 processor with 12 GHz CPU, and a USB charging cradle. It's black and works great.