Futaba R614FS 4-Channel FASST Receiver 4PKS

This is the Futaba R614FS 2.4GHz FASST 4-Channel Receiver and is intended for use with the Futaba 4PK and 4PKS Surface Radio Systems. 
Features:

• Futaba's FASST (Futaba Advanced Spread Spectrum Technology) shifts very quickly virtually eliminating signal conflicts and interruptions unlike other 2.4GHz systems that only stay on one or two frequencies. Small and lightweight

• For surface use only

Specifications: 
Size: 1.38x0.91x0.33" (35.1x23.2x8.5mm) 
Weight: 0.28oz (7.8g) 
Operating Voltage: 3.7V~7.4V 
Usable Voltage: 3.5~8.4V