Optimized portability: *The accessories are placed in the dedicated basket. *The keyboard can be attached to the WAKIe transcranial Doppler. *The WAKIe transcranial Doppler with all its accessories can be carried with one hand. M-mode display: With M-mode transcranial Doppler, it is easier to find the acoustic window. It is no longer necessary to guess the depth of the vessel. M-mode display shows where the best signal is.