This is the JR Sport Micro AirPac FM with the RS6UL Receiver (positive shift, for use with JR and Airtronics) and two SM15 Sub-Micro servos.  This AirPac is very economical for parkflyers and other micro aircraft.

SM-15 Sub-Micro Servo

Servo Specifications:
Torque: 15 oz/in @ 4.8V
Speed: .21/60 @ 4.8v, .17/60 @ 6v
Dimensions: 0.45 x 0.87 x 0.85
Weight: 9.0 g (0.32 oz)
Application: Indoor, Park Flyers

RS6UL Reciever
JR has a unique signal processing system called ABC&W. ABC&W stands for Automatic Blocking Circuit with Window. ABC&W systems have distinct advantages over single or dual conversion receivers. ABC&W systems create a very small electronic window that looks for the specific frequency that the receivers crystal is on. Any signal that is off spec for this window is rejected, and then the allowed signal is cleaned up, amplified, and re-routed through the window many, many times till all that is left is the pure signal on the channel that is coming from your transmitter and then sent on to the servos. This all takes place without any noticeable delay of response from your stick movement to the servo. This technology is the reason that JR can produce single conversion receivers that have fewer components and weigh less than other single and dual conversion receivers without the worry about outside interference.

Receiver Specifications:
# of Channels: 6
Modulation: FM
Band: 72
Dimensions: 0.50 x 1.38 x 0.75 in
Weight: 7g