Our wireless earbuds are with magnetic opening lid and contact charging, which can effectively prevent sweat from damaging components. Description: with Bluetooth 5.0 chip, Communication distance: barrier-free 10-15 meters, Headphone battery capacity: 30 mA, Charging box battery capacity: 400 mA (with IC protection board), *Standby time: 60 days+, *Charging time: about 1 hour.