Astell&Kern Astell&Kern SoftBank Selection SoftBankSELECTION Wireless Headphone Amplifier XHA-9000 SB-XB10-BT HA I haven't used this much since I bought it, and it's been stored at home. I checked the operation this time, and the battery only lasted about 20 minutes. This is an old product, so please understand and consider purchasing. The items for sale are: Main unit, Rubber cover for the back of the main unit, Clip, USB cable, Instruction manual, Outer box. Operation confirmed. There is a hairline scratch on the main unit panel that is not visible in the photos. It's not very noticeable. The outer box is damaged. Astell&Kern for SoftBank SELECTION XHA-9000 SB-XB10-BTHA Original price: 20,167 yen Take wireless sound to a new stage Wireless headphone amplifier compatible with 24-bit high-resolution sound sources External dimensions: Approximately 50.0 (W) x 12.3 (D) x 50.0 (H) mm (excluding protrusions and clip) Weight: Approximately 23g