Mousetrapper Delta RollerBar Mouse, Regular & Extended Size:Delta Regular MT153 This is the fundamental difference:

This is the fundamental difference: passive wrist support vs

Our certified ergonomic specialists have 30+ years of experience configuring lab

increased stamina with fewer breaks

Two-part system — addresses both lumbar support and pelvic positioning simultaneously

USB Hub: Built-in USB 3

Mousetrapper Delta RollerBar Mouse, Regular & Extended Size:Delta Regular MT153 This is the fundamental difference:Features: Ergonomically designed central rollerbar input device minimizes arm extension while mousing Soft texture of rollerbar enables you to work precisely and efficiently Easily control the cursor with smooth movements and click with a light press with your fingers. 10 inch (255mm) wide Control Bar with click and scroll function which can be easily moved 4. 9 inches (125mm) sideways 6 programmable buttons that can easily be customized using MT Keys