ship from Japan CHOOSE WIRELESS CONNECTIVITY OPTIONS: For devices with few ports, you can connect via Bluetooth 3.0 or Bluetooth 5.0 (Bluetooth LE) without blocking the ports, or via USB-A with the 2.4GHz nano receiver. ADVANCED TRACKING TECHNOLOGY: A high-performance optical tracking sensor enables fast and precise tracking on glass, granite, lacquerware, marble and wooden surfaces that were traditionally difficult to track. AES 128-bit encryption: Uses encryption technology that is sometimes standardized by companies to prevent information leakage to hackers, and prevents data leakage. 3-stage switching DPI button: You can easily adjust the cursor speed with the DPI button according to your usage. DPI is 3 levels of 1200/2400/4000. High DPI is ideal for web browsing and word writing, while low DPI is ideal for detailed editing. Sleek, streamlined, symmetrical design: A lightweight model that's highly portable for on-the-go users, and a quiet click that can be used anywhere. The