Wireless earphones with Bluetooth 5.0, IPX4 water resistance, and approximately 10 hours of continuous playback. Neckband type, brand new, unopened. (3480 yen including tax) ◯ Model Name: FFB579W ◯ Water Resistance: IPX4 ◯ Bluetooth Version: Bluetooth 5.0 ◯ Driver Diameter: 12mm ◯ Continuous Playback Time: Approximately 10 hours ◯ Weight: Approximately 115g ◯ Charging Time: Approximately 2 hours ◯ Operation Buttons: 3 buttons Ships immediately via Mercari delivery. :)