Wireless earphones with Bluetooth 5.3 and a 200mAh battery. - Model Name: Wireless Earphones WH - Bluetooth Version: Ver 5.3 - Frequency Band: 2.4GHz (2402-2480MHz) - Battery Capacity: 200mAh - Charging Method: USB Thank you for viewing. I am selling these because the size didn't fit, although I charged them and tried them in my ears once. There is a crack in the plastic (not the case).