The Wireless Trackball Mouse by Protoarc, model EM01 NL, is a sleek and ergonomic Bluetooth mouse designed for comfortable use. Featuring a unique rollerball thumb design, this black mouse offers a convenient and precise way to navigate on your computer or tablet. The wireless connectivity allows for freedom of movement, while the ergonomic design ensures comfort during extended use. Perfect for those seeking a modern and efficient input device, this trackball mouse is a reliable option for everyday computing tasks.