LIT-1220A is AC powered machine that let you forget about batteries charging or replacement.  It is easy to operate. It consists of a table top control unit and remote head that has twelve red laser modules and quartz lamp for infra-red (IR) heat treatment.  Control unit allows an independent selection of optimal treatment parameters for IR and Laser light.  Lasers can be set to work continuously at maximum power or to pulsed mode with variable pulse frequency.  In pulsed mode, average laser power is lower than in continuous but much higher during the pulse, providing deeper penetration of light into tissue.  Pulse frequency is variable and lays within the physiologically responsive range as described in literature.  Laser light treatment can be combined with IR.  IR lamp has variable power output in continuous or in two low frequency pulsed modes.  Detachable ten-inch-long handle is included for more convenient treatment of hard to reach body parts (back, foot). Also included is a miniature single laser unit (5 mW) for spot treatment of lips (herpes⁺), ear (tinnitus⁺) or other conditions that may require a compact probe to access treatment area. 

I also have an optional lasers only (LT-18) head for this unit and optional IR lamp only (IR-50) heads (see my other listings). .  Those heads have 50% more laser power and two times more heat power compared to the standard combo head.