hama 182699 ergonomische muis verticale muis draadloos voor rechtshandigen 3 snelheden tot 1800dpi tegen tennisarm i muisarm rsi syndroom draadloze muis zwartAn ergonomic mouse prevents strain and pain in the shoulder and wrist. It also encourages a more natural posture while working. 8 meter range (2. 4 GHz wireless technology) for interference free transmission, small USB receiver can be permanently inserted into the device's USB port or conveniently stored in the mouse housing. High resolution sensor, 3 dpi settings for adjusting the hand speed (up to 1800 dpi). Front and back keys for navigating the