portable MD recorder
These products are considerably more lightweight and compact than their previous models. The SJ-MR240 & SJ-MR270 are 8% & 11% lighter, respectively and are miniaturized by 22%; however they still manage to offer the world’s longest continuous playback time of 130 hours!
The above achievements have been partly gained by use of ‘electric current actuator SMA wire’ ( Furukawa NT-H7-TTR). The wire has been utilized as a drive source for the elevator style of magnetic head. This solution minimizes required space and provides a simple system structure. (Refer to NT-H7-TTR)