RW.RC 20A  BLHeli 14.2 OPTO 2-4s ESC For QAV250 multicopter

Specifications:
Voltage: 6-16.8V (2-4S lithium polymer)
Output Current: 20A
BEC: No
Signal frequency: 20-499Hz
Output PWM Frequency: 18KHz of
Firmware: BLHeli firmware version .14.2
Size: 22 x 13 x 4mm/0.9 x 0.5 x 0.2 inch
Package size: 90 x 130mm/3.5 x 5.1 inch
Net Weight: 6g
Package Weight: 7g

Package included:
1 x 20A Mini BLHeli 14.2 OPTO 2-4s ESC