Walkera

Specification:
1).Overall Length: 470 mm
2).Main Rotor Diameter: 510 mm
3).Tail Rotor Diameter: 146 mm
4).Battery: Ni-MH 8.4V 650mAh
5).All-up Weight: 310g (Battery included)
6).Drive System: 370SD
7).Gyro: Built in
8). 4CH PPM Transmitter
9). 4-in-1 Receiver

Specification:
1). Receiver: RX-2601
2). Tail Rotor Diameter: 150 mm
3). Main Rotor Diameter: 550 mm
4). Overall Length: 580 mm
5). Tail Motor Type: 1225FE33
6). Gyro: Built-in
7). All-up Weight: 373 g (Battery included)

Specification:
1). All-up Weight: 620-640g(Battery included)
2). Tail Rotor Dia. : 145mm
3). Main Rotor Dia. : 620mm
4). Overall Length: 600mm
5). Receiver: RX-2701
6). Gyro: WK-G011
7). Transmitter: WK-2601
8). Brushless Main Motor : WK-WS-26-001
9). Brushless Speed Controller: WK-WST-30A
10).Brush Main Motor : 380PF
11).Battery: 11.1V 1200mAh
12).Brush Speed Controller: WK-B20A
13).Servo: NS-05 / weight 9.1g / speed 0.12sec/60o(4.8V) / torque 1.1kg/cm (4.8V) / dimension 22.5*11.8*27mm