The handshake position of the wrist when using the Evoluent 4 enables working in a comfortable natural position. Supports your hand in a fully upright neutral handshake position. Optical resolution sensor moves the pointer quickly to reduce hand movements The handshake position of vertical mice keeps the wrist from bending as much to the side while the forearm also turns inward to a lesser degree (Schmid, et al., 2015). This means that muscle activity in the forearm is less than it would be when using a conventional mouse (Quemelo & Vieira, 2013). Research has shown that the use of a vertical joystick mouse ensures a faster recovery from forearm, wrist and hand complaints (Aarås, et al., 2001).Consumer Delivery Expectation: Next working day