Key Features:

4-channel 2.4GHz transmitter with servo reversing.
Easy to use control for basic models.
Includes 6-channel receiver
800 meter ground range

Included;
1 x 2.4Ghz transmitter
1 x 2.4Ghz Receiver
1 x Bind Plug.

Specifications:

23.5 x 15.7 x 6.1 mm , weighs 17 gram
Constant current 18A Max 20A
Li-Poly 2-3 cells; Ni-MH 4-10 cells Auto Detect
BEC: 1A
Auto shut down without signal.
Auto Low battery Slow down at 3.0V/Lipo, cut-off at 2.9V/Lipo
Limited programmability easy to use.
Auto Low battery Slow down at 3.0V/Lipo, cut-off at 2.9V/Lipo

This is a good entry level speed controller and is on par with Towerproand other hyped up budget brands.

Specifications:

RPM/V (kv): 1534 RPM/V
No. Of cells: 2-3 Li-Poly
No load current / 10 V: 0.9 A
Max. efficiency: 82%
Max. efficiency current: 7 -16 A (>75%)
Current capacity: 16A/60s
Internal Resistance: 0.15 ohm
Stator Dimensions: 22x10 mm
Weight: 39 g
Shaft diameter: 3 mm

Recommended model weight: 200 -800 g
Recommended prop without gearbox: 5-7 inches

Features: Coreless Motor, All Nylon Gears, Connector Wire Length 150mm, Universal plug for just about ALL radio systems!

SG90 Specs:

* Dimensions: 22 X 11.5 X 22mm
* Operating Speed (4.8V no load): 0.12sec/60 degrees
* Stall Torque (4.8V): 17.5oz/in (1 kg/cm)
* Temperature Range: -30 to +60
* Degree CDead Band Width: 7usec
* Operating Voltage: 3.0-7.2 Volts
* Each servo comes with 3 different servo horns and fittings as seen.

Specifications:

RPM per volt : 2200
No Load Current / 10V: 1.4A
Wire Winds / Turns: 12
Ni-Mh Battery: 6 - 10 cells
Li-Po Battery: 2 / 3 cells
Max efficiency current: 14~22 A (>75%)
Max efficiency: 72%
Max Current: 28A / 60 sec
Dimension: 27.5 x 30mm
Shaft: 3.17mm
Weight: 47g