The PineTime is the latest side project of PINE64, the company behind the PineBook Pro and PinePhone. The smartwatch will integrate a Nordic nF52832 SoC and will support Bluetooth 5, 2.4 GHz Wi-Fi, ANT and NFC. The device will include a heart rate monitor too, along with multi-day battery life and a zinc alloy and plastic chassis. The PineTime will cost US$25, with PINE64 encouraging ARM Mbed and FreeRTOS developers to join the project too.
https://www.notebookcheck.net/PINE64-announces-the-PineTime-a-US-25-smartwatch.434870.0.html