New Delhi: A wearable wrist tracker to detect COVID-19 symptoms at an early stage will be available in the market next month with its developer, a IIT Madras incubated start up, raising a funding of Rs 22 crore for the purpose. "Muse wearbales", the start up incubated at IIT Madras by an alumni group along with an NIT Warangal alumnus, is planning to launch the trackers in 70 countries.