TECKNET Ergonomic Mouse, Wireless Bluetooth Vertical Mouse, 4800 DPI Optical Tracking, 6 Adjustable DPI, Quiet Clicks, 2.4GHz with USB A Receiver, 6 Buttons, Wide Compatibility (Dual-mode)

PRECISE CONTROL: With 5 Adjustable DPI 4800/3200/2400/1600/800, providing higher sensitivity for smooth and precise tracking. SILENT CLICKS: Clicking noise is reduced by more than 90%, avoiding disturbing others and ensuring your office or home work not be interrupted. EASY TO USE: Just plug the 2.4G receiver for 49ft connection distance.The vertical mice requires an available USB-A port. An adapter may be needed for computers with only USB-C ports.