Bluetooth Earphones [2024 Ultimate Sound Quality Version - Open-Ear] Wireless Earphones Bluetooth 5.4 With Microphone Up to 40 Hours Playback Listen-While-Doing Earphones Ear-Hook Style Ultimate Fit Hands-Free Calling Possible Air Conduction Earphones These Bluetooth earphones use a USB-C charging port, which significantly speeds up charging compared to the traditional USB, and also supports fast charging, so you can rest assured even when you're in a hurry to go out. Black Functionality Confirmed No charging cable, box, or instruction manual Purchased new on Amazon 1 year ago for 4,299 yen, Never used. Anonymous shipping.