TECKNET Ergonomic Wireless Vertical Mouse — Bluetooth & 2.4GHz with USB A Receiver, 4800 DPI Optical Tracking, 6 Adjustable DPI, Quiet Clicks, 12 Months Battery, 6 Buttons, Wide Compatibility

Comfort-focused vertical design places your hand at a near-vertical angle to reduce wrist strain during long computer sessions (right-handed use only). The optical sensor supports 6 user-selectable DPI settings — 4800/3200/2400/1600/1200/800 — and the indicator light flashes a number of times that corresponds to the DPI level selected. Dual wireless connectivity via Bluetooth and a 2.4GHz USB A receiver ensures smooth operation across different surface types. Silent left/right clicks make this mouse suitable for quiet environments such as libraries (note: only the left and right click buttons are silent; other function buttons still make normal noise). This mouse includes 6 buttons for convenient navigation and control. Battery-saving features put the device into deep sleep after approximately 10-30 minutes of inactivity and can be awoken by pressing the right or left button; the product is designed to run up to 12 Months on battery life under typical use (requires 2 AAA batteries, not included). Compatible with Windows, Mac, Chrome and Linux laptops — be aware that side buttons are not compatible with macOS. When battery power is low, the LED will blink; using branded batteries is recommended to maximize longevity.