This is a headset earphone. I purchased it on Amazon in October for 1799 yen. It is new and unused (unopened). The following is an excerpt from the Amazon description: Wireless earphones equipped with Bluetooth 6.0 and a 500mAh battery, allowing for up to 23 hours of use. - Bluetooth version: Bluetooth 6.0 - Battery capacity: 500mAh - Usage time: 21-23 hours - Charging time: 2-2.5 hours - Connection stability: 60% improvement - Pairing speed: 70% improvement Thank you for looking. Thank you.