The 1SQ is unlike any other quadcopter and not just because of its compact size. A 3-axis gyro system, combined with 4 independently controlled rotor blades, makes this machine very stable.
Helimax RC Quadcopters
Helimax RC Quadcopters - 1SQ V-Cam
Helimax RC Quadcopters - 1Si
Helimax RC Quadcopters - 230Si
Helimax RC Quadcopters - HMXE0864
Helimax RC Quadcopters - FORM500