Here is a smart wearable development kit that enables designers to bring their ideas to life faster. The Hexiwear hardware has a smartwatch form factor and 6 on-board sensors, including a heart rate monitor, humidity/temperature/light sensors, an accelerometer. The device has its own iOS and Android apps.
Hexiwear uses FreeRTOS, the Kinetis software development kit (SDK) and the Kinetis Design Studio IDE. It has an OLED screen and a rechargeable battery. Developers can add more sensors for their projects. More information is available here.