The HobbyKing® ™ GT2B features 3 channel operation, interchangeable hand grips, adjustable steering dual-rate, servo reversing and a rechargeable li-ion battery which eliminates the need for buying expensive AA batteries. The li-ion battery also makes this transmitter much lighter, which gives the user a great feel during use. No more lugging around a heavy transmitter holding 8 x AA batteries!

Features:
• Reliable, interference-free 2.4GHz AFHDS signal operation
• 3CH operation
• Rechargeable li-ion transmitter battery
• Interchangeable rubber hand grips
• Adjustable steering dual-rate
• Servo reversing

Transmitter Specs:
Model: Car/Boat
RF Power: 20dBm (100mW) max
Modulation: GFSK
System Type: AFHDS
Sensitivity: 1024
Low Voltage Warning: Yes
Charge Port: Yes (USB- charge cable included)
Power: 3.7V 800mAh li-ion (included)
Weight: 270g

Receiver Specs:
Model: Car/Boat
RF Receiver Sensitivity: -105dBm
Modulation: GFSK
System Type: AFHDS
Sensitivity: 1024
Failsafe: Yes
Power Port: Yes (VCC)
Power: 4.5~6.5 VDC 
Weight: 5g
Antenna Length: 26mm
Dimensions: 37.6 x 22.3 x 13mm

Includes:
HK-GT2B transmitter
HK-GT2B 3CH receiver
3.7V li-ion rechargeable battery pack
Optional second rubber hand grip
Antenna tube
USB charge cable
Bind plug
User manual