Main specifications change:
- 3.5 -inch Backlight with color TFT LCD equipped with excellent outdoor visibility .
- On -screen display , which is larger than the 4PKSR, visibility is dramatically improved .
- 3PL, 3PRKA series , 4PL series T-FHSS, S-FHSS, 4PK series receiver FASST (C2) receiver are available .
- dramatically improve the weight balance molded parts it is new design almost , with a low center of gravity by the steering position down , weight reduction of about 15g, downsizing by the antenna integrated part of the framework than the review 4PKSR from the thickness of the body rigidity improvement efforts were made to use the aluminum frame .
- 4PX lightweight 100g or more than made SANWA M12
- Response of Futaba fastest . About 30% faster than 4PKSR.
- The T-FHSS two-way communication , telemetry function is available without reducing the response .
- without having to remove the battery cover dedicated LiFe battery , rechargeable easily .
- steering which is a consumable part of most , the throttle stick , I adopt a high- volume endurance , can be suppressed to a large extent the inspection and maintenance frequency in the prop .



Source :
http://kentech.blogs.se/2014/05/08/futa ... -18411817/
http://kentech.blogs.se/2014/05/08/futa ... -18410301/