The Photosonix Pro Tutor 2 comes with cool blue glasses. Capacity for up to 25 downloaded sessions Five tones: – Pulsed tone with selectable pitch – Pulsed surf sound – Pulsed chord – Binaural beats – Dual Binaural beats Frequency control from 1 to 42 Hertz Four octaves of pitch control, just scale. Sine wave sound, unusual in this price range. Pitch ramping, unusual anywhere. Control of stimulation phase and duty cycle Session run time adjust.