The Redmi Watch has been announced alongside the new Redmi Note 9 series of smartphones as the first smartwatch from Xiaomi’s Redmi brand, packing a low price and some eye-catching features.

One such feature is its 230mAh battery, which apparently lasts for seven days with normal use, or up to 12 days if you enable the power-saving mode. Juicing it back up again is said to take around two hours.
…
Continue here:
https://www.techradar.com/news/xiaomi-redmi-watch-announced-with-a-very-low-price-and-7-days-of-battery-life