I don't know the details. New, unopened. Seal is affixed. This is the automatically generated description: ↓ Bluetooth wireless earphones with clear sound quality and up to 9 hours of continuous use. - Model Name: N200BT - Bluetooth Compatible: Yes - Sound Quality Characteristics: Clear sound quality, high-quality sound - Continuous Usage Time: Up to 9 hours - Design: Headphones Thank you for viewing.