atc1441 on Twitter: "Interesting new hackable smartwatch with nRF52840. The so called G5 Smartwatch, not cheap but nice hardware and with screws in the back so easy to open. With an impressive
Smart Watch Men Heart Rate Blood Pressure Fitness Tracker Sport Waterproof 3ATM | eBay
QAK SG2 Nordic NRF52840 Touch Completo AMOLED 390 * 390 HD Pantalla HD Ritmo Cardíaco Smartwatch Hombre Y Moda Mujeres IP68 Smartwatch,B : Amazon.es: Electrónica
Bluetooth LE sensor-based smartwatch syncs user's heart rate data and activity metrics to smartphone app - nordicsemi.com