Specifications:

Bluetooth version: 5.1+EDR Noise reduction version: CVC8.0 Frequency range: 2402MHz ~ 2480MHz Working distance: 10m Charging input voltage and current: 5V/60mAh Headphone battery capacity：38mAh Charging compartment battery capacity: 1200mAh Headphone charging time 1.5 hours Music playback time: 3 hours