I purchased this on Amazon. It doesn't suit my computer needs, so I'm putting it up for sale. Contents: Trackball mouse body Receiver (located inside the battery box) I disposed of the product box, so the original box is not included. It will be shipped in a different box. Condition: Purchased in July 2025 and used for about a week, but it didn't fit my usage needs, so I'm selling it. There are no noticeable scratches or stains. Product Description: Ergonomically designed silent trackball mouse, providing comfortable operability. - Connection method: 2.4G wireless - DPI settings: 5 DPI - Weight: Approximately 125.5g - Size: 135.31 x 98.92 x 45.55mm - Accessories: Trackball mouse body, receiver, user manual - Click count: 8 million clicks - Silent type: Yes - Ergonomics: Yes Ewin Trackball Mouse Bluetooth & 2.4GHz Dual Mode, Connects to 3 Devices Simultaneously, Trackball 【NEW Model】 Wireless, Thumb, Silent Type, High Precision, Ergonomic, Instant Connection, Wireless Mouse, 7 Buttons, Forward/Back Buttons