Impulse Lasers are true lasers, not LEDs. They are safe and easy to use with a choice of multiple probes and an optimum penetration wavelength of 904nm. They come with a state-of-the-art computer control with six Nogier frequencies, plus sweep frequency mode and an industrial battery with no “memory” effect. Impulse Lasers are portable and will recharge overnight. The products have a one year warranty included with optional service contracts for post warranty period. Ask us about rental options.