The Retro Classic Mouse (RCM) stays true to the minimalist philosophy in order to accentuate its ambidextrous design. With its modern features and ability to work on virtually any surface, the RCM is an essential companion for your Retro Classic & Compact keyboard. Genuine Leather Surface Utilizing top-grain chrome-tanned leather to provide a pleasant touch, each leather piece is precision-cut, molded in, and hand-trimmed to perfection. Exquisite Craftsmanship Immaculate attention to every detail - Genuine leather top cover, textured aluminum wheel and alloy frame with precision bolts. The scroll wheel design starts with a high-grade aluminum rod that is knurled into a diamond-shaped pattern and completed with chamfered edges on a precision CNC lathe. It is then anodized to enhance aesthetics and durability. Tracks Virtually Anywhere The PixArt PAW3805 sensor is designed to track flawlessly on virtually any surface, including glass and other high-gloss materials. Dual USB-RF & Bluetooth Interfaces Connect wirelessly with Bluetooth or RF via USB receiver. Works on Bluetooth enabled PC's natively but also includes a USB RF receiver for computers without Bluetooth. Interchangeable Top Cover The leather top-cover can be changed after excessive use or to achieve a different look. Long Usage Time Built-in is a high-capacity 1000mAh Lithium Ion rechargeable battery. Usage time is up to 4 months on a single charge. USB-C Charging Port Charging the mouse is simplified with USB Type-C port. Unlike older USB ports, the connector doesn’t have to be inserted in only one direction.