Business Novel wearable patch serves as personal thermostat Updated : May 19, 2019 01:52 PM IST The device is powered by a flexible, stretchable battery pack and can be embedded in clothing. It could provide personalised cooling and heating at home, work, or on the go. The soft, stretchy patch cools or warms a user's skin to a comfortable temperature and keeps it there as the ambient temperature changes. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.