Ergonomic Wireless Trackball Mouse — 5-Level DPI 100/200/400/800/1200, 2.4G & Bluetooth, 3-Device Switch (USB Receiver), 6-Key

Ergonomically shaped to reduce wrist and forearm movement, this thumb-operated trackball mouse helps prevent strain and "mouse hand," making it suitable for programmers and those who work 8+ hours daily. Precision control comes from a 5-level DPI selector with settings of 100/200/400/800/1200 for accurate cursor movement across spreadsheets, designs, and presentations. Connectivity is versatile and driver-free: use the 2.4G wireless USB receiver or pair via Bluetooth for instant Plug-and-Play operation; a bottom button lets you switch between up to 3 connected devices. Power is handled by a high-capacity battery for extended runtime; recharge directly from a computer USB port or a 5V charger to keep the trackball ready for long work sessions. The six-key layout uses durable micro-switch buttons and includes dedicated forward and backward keys for faster web and document navigation. Note: a short adjustment period is normal — allow about 1-2 weeks to become fully comfortable with the trackball’s thumb-driven operation.