Fangrui Product Details Support Read And Write Storage Data Files. Compatible With Multiple Systems: Android, Harmonyos, Windows10/11. Simulation Function: Only One Ic Card Position Can Be Used For Simulation And Detection Ic Card Reading And Writing: Support 13.56m Hz. Id Card Reading And Writing: Support 13.56m Hz Bluetooth Connection: Use Bluetooth Function To Connect. Mini Program Function: Support Mini Program Function, More Convenient To Use Data Mission: Usb Type-c Battery Specification: 3.7v/140mah. Charging Power: 5v/80ma Notes: 1. Battery Life: This Device Uses The Quality 3.7v/140mah Battery, Which Is Very Durable It Can Be Used For About 120 Minutes After Charging Once. 2. Charging Suggestions: Use A 5v Constant Voltage Charger Or A 5v Constant Voltage Power Bank, Or Use A Computer Usb Or Mobile Phone Otg To Charge. If It Is A Fast Charging Charger Or A Fast Charging Power Bank, Please Use A Regular Original One. Using An Irregular Fast Charging Charger Or A Fast Charging Power Bank May Cause High Voltage Bre