The ProtoArc EM01 NL Ergonomic Wireless Trackball Mouse with a purple ball is a unique and stylish mouse designed for comfort and precision. With Bluetooth connectivity and a maximum DPI of 1600, this mouse offers a hassle-free wireless experience. The ergonomic design ensures a comfortable and natural hand position while using the trackball for smooth and precise cursor movement. The purple color adds a fun and stylish touch to your workspace, making it both functional and aesthetically pleasing.