Excellent Futaba 14SG Heli Version Transmitter Only Version.  Works on Airplane, Helicopters, Multirotor, and Gliders.

Includes:

• Futaba 14SGA 14 Channel 2.4GHz Computer Radio System on Mode 2
• 6V 1800mAh NiMH Transmitter Battery,
• Charger
• Receiver isn't included

Specs:

Transmitter;

• Transmitting Frequency: 2.4GHz band
• System: FASSTest14CH, FASSTest12CH, FASST MULTI, FASST 7CH, S-FHSS Switchable
• Power Supply: 6.0V HT5F1800B NiMH battery
• Power Requirement: 3.7 - 7.4V (voltage range 3.5 - 8.4V)
• Current drain: 75mA
• Extra Voltage Port: 0 - 70V DC
• Size: 0.98 x 1.9 x 0.56" (24.9 x 47.3 x 14.3mm)
• Weight: 0.38oz (10.9g)