These are Oppo’s Dhansu earbuds, once charged will run for 25 hours, the price is just this

Users will get up to 6 hours of battery in a single charge in these earbuds. At the same time, with the case, users will be able to run it for a total of 25 hours. The battery of each bud is 27mAh. At the same time, there is a 300mAh battery in the case.