Specifications:

• The earphone has Bluetooth 5.0 chip, which has fast and stable connection.
  With smart touch operation, it is convenient to use.
  It has built-in active noise reduction IC, providing HD phone call.
  You can use one earphone or two with HiFi stereo sound.
• Bluetooth Version: 5.0
• Charging Voltage: DC 5V
• Microphone Sensitivity: -42Db
• Charging Time: about 1 Hour
• color; black