This is the Futaba R616FFM 2.4GHz FASST 6-Channel Receiver this is suitable for sub 100gm models
* Designed for use with park flyers or indoor aircraft
* Compatible with micro connectors only
* Easy one touch linking to transmitter
* Dimensions: 1.5 x 0.9 x 0.3" (38 x 22 x 7mm)
* Weight: 0.22oz (6.3g) with case
* 0.14oz (4.0g) without case
* Power Requirement: 4.8V- 6.0V battery or regulated output from ESC
* F/S and Battery F/S function (for channel three)
* Battery F/S Voltage: 3.8V
* Current Drain: 75mA (w/no servos) with or without signal.
* Approximate range of 1000 ft.
* Antenna Length: 1"
Fasst Transmitters 6EX, 7C, and the following transmitter modules; TM7, TM8 (on 7 channel mode),TM10 (on 7 channel mode) and TM14 (on 7 channel mode).
The polarity is different to the spektrum 6300