Trackball mouse with Bluetooth and 2.4GHz connectivity, equipped with a new laser sensor. Brand new, unused. Opened for photography. - Type: Trackball Mouse - Connectivity: Bluetooth, 2.4GHz - DPI Settings: 200, 800, 1200, 1600 - Sensor: New Laser Sensor - Colors: Black, Purple - Accessories: USB Receiver [Design to Reduce Strain on Wrists and Arms] Since there's no need to move the mouse, the design minimizes strain on the wrists and arms. Do you ever feel pain in your wrists or shoulders after using a mouse for a long time? We highly recommend this trackball mouse to alleviate fatigue and save space. The EWIN trackball allows you to control the cursor by rolling the ball with your thumb. It also features an ergonomic shape that fits comfortably in your hand, promising comfortable operation. It's the perfect solution for those who feel strain on their wrists and shoulders. Please try the EWIN trackball to reduce strain while achieving efficient and comfortable work. [Abundant Versatile Button Functions] This trackball mouse, which excels in comfort and ease of use, is equipped with left and right buttons, a scroll wheel, and a DPI button that allows you to change the count according to your usage. With this DPI button, you can switch the cursor speed in 5 stages: 200 counts, 400 counts, 800 counts, 1200 counts, and 1600 counts. This allows you to handle everything from detailed work such as Excel and drawing to tasks that use a wide screen without any difficulty. It also has forward and backward buttons (※Not compatible with Mac) convenient for browsing the internet, making web page browsing easy. [Long Battery Life of Up to 18 Months] Adopting power-saving technology, you can comfortably use it for up to 18 months with just one AA battery without needing to replace the battery. It also has a convenient status indicator. Thank you for viewing.