Ergonomic Wireless Design: The J-Tech Digital V638’s comfortable, ergonomic “handshake” design greatly reduces arm/wrist/hand strain while providing relief for carpal tunnel syndrome. Back/forward thumb buttons provide extra convenience. (Button functionality can also be changed or reassigned using third-party software.) Works on most non-metallic surfaces. The built-in lithium battery is fully rechargeable.
![J-Tech Digital Wired Ergonomic Vertical USB Mouse with Adjustable Sensitivity (600/1000/1600 DPI), Scroll Endurance, Removable Palm Rest & Thumb Buttons [V628]](http://focusorylab.com/cdn/shop/files/71VuTm5ACrL._AC_SX679.jpg?v=1758249996&width=1445)
![J-Tech Digital Wired Ergonomic Vertical USB Mouse with Adjustable Sensitivity (600/1000/1600 DPI), Scroll Endurance, Removable Palm Rest & Thumb Buttons [V628]](http://focusorylab.com/cdn/shop/files/412aVruC3ZL._AC_SX679.jpg?v=1758249996&width=1445)
![J-Tech Digital Wired Ergonomic Vertical USB Mouse with Adjustable Sensitivity (600/1000/1600 DPI), Scroll Endurance, Removable Palm Rest & Thumb Buttons [V628]](http://focusorylab.com/cdn/shop/files/71JivoOtoNL._AC_SX679.jpg?v=1758249997&width=1445)
![J-Tech Digital Wired Ergonomic Vertical USB Mouse with Adjustable Sensitivity (600/1000/1600 DPI), Scroll Endurance, Removable Palm Rest & Thumb Buttons [V628]](http://focusorylab.com/cdn/shop/files/71CWKasDaoL._AC_SX679.jpg?v=1758249996&width=1445)
![J-Tech Digital Wired Ergonomic Vertical USB Mouse with Adjustable Sensitivity (600/1000/1600 DPI), Scroll Endurance, Removable Palm Rest & Thumb Buttons [V628]](http://focusorylab.com/cdn/shop/files/71R3PmAB6KL._AC_SX679.jpg?v=1758249997&width=1445)
![J-Tech Digital Wired Ergonomic Vertical USB Mouse with Adjustable Sensitivity (600/1000/1600 DPI), Scroll Endurance, Removable Palm Rest & Thumb Buttons [V628]](http://focusorylab.com/cdn/shop/files/61kEggNvwAL._AC_SX679.jpg?v=1758249997&width=1445)
![J-Tech Digital Wired Ergonomic Vertical USB Mouse with Adjustable Sensitivity (600/1000/1600 DPI), Scroll Endurance, Removable Palm Rest & Thumb Buttons [V628]](http://focusorylab.com/cdn/shop/files/61qCT_vCqnL._AC_SX679.jpg?v=1758249997&width=1445)
![J-Tech Digital Wired Ergonomic Vertical USB Mouse with Adjustable Sensitivity (600/1000/1600 DPI), Scroll Endurance, Removable Palm Rest & Thumb Buttons [V628]](http://focusorylab.com/cdn/shop/files/81tKPacrLmL._AC_SX679.jpg?v=1758249997&width=1445)
![J-Tech Digital Wired Ergonomic Vertical USB Mouse with Adjustable Sensitivity (600/1000/1600 DPI), Scroll Endurance, Removable Palm Rest & Thumb Buttons [V628]](http://focusorylab.com/cdn/shop/files/71mkfquSQ9L._AC_SX679.jpg?v=1758249997&width=1445)