JXF series wood counter rotating propellers.

This is the iMax B6 Quattro charger.
The iMax Quattro B6 allows you to plug 4 batteries into on charger simultaneously, and it will intelligently and automatically charge all 4 of them at once to their maximum capacity. To top of it, the batteries being charged do not even need to have the same configuration. You can connect different chemistry (ni-mh/Ni-Cd/LiPo/LiFe) batteries into any of the charging ports.

New type of sensing process provides reliable geographical positioning, completely independent of the visible horizon.

Particular CCD sensor can catch the ground picture to compare, and prevent helicopter from drifting.
Adjust the working status of Flymentor by AUX Channel, switchable gain system offers three different positions: Off, stabilisation and Position-holding mode.
Head lock gyro outside setting and Swashplate mixer.
Control the sensitivity and mode of gyro by GEAR Channel.
Support helicopters with 3S 120°swashplate,or 3S 140°swashplate,or 4S 90°swashplate, or 4S 90°+45°swash plate.
Attitude stabilisation in inverted flight.
Set Flymentor by computer USB adapter.
If you use FM/PPM radio equipment, Flymentor will make the ailerons, elevator and tail servo back immediately. The pitch will remain in the final signal position. And Flymentor will switch to position mode automatically. The sensitivity is 70%.