IIT-Madras-incubated startup, Muse Wearables, has raised ₹22 crore to develop a wristband to detect coronavirus symptoms at an early stage. Priced at ₹3,500, the wristband will be available for consumers across 70 countries by August. It has sensors for skin temperature, heart rate and blood oxygen saturation. It will be Bluetooth-enabled and will connect to an app.