Handshake Mouse from Bakker Elkhuizen - Ergonomic Specialists.
The Handshake Mouse is a mouse with a vertical grip. It has two buttons and a scroll wheel. Using this mouse correctly reduces muscle tension. The SRM Mouse is designed for small and medium-sized hands (hand widths up to 9 cm, excluding the thumb). The Evoluent mouse is better for larger hands. The Handshake Mouse has a powerful laser sensor and the option to choose between 400/1600/3200 DPI.
Size: for smaller hands (width up to 7.5 cm, measured flat at the hand's widest point, excluding the thumb).
Ergonomic: proper arm and wrist posture.
Unique: short adjustment period.