Optical Flow technology — Provides horizontal control stability at altitudes up to 10 meters (30 feet).
Altitude Hold — Holds the quadcopter's altitude at a chosen height after releasing the transmitter's throttle stick.
Auto Take-off and Land — Take off and land automatically with the push of a transmitter button.
Headless Mode — The Sync 251 always moves in the same direction that you move the controls with this feature activated.
SAFE® technology — SAFE® (Sensor Assisted Flight Envelope) technology lets you program the Sync to minimize control challenges automatically while you’re learning. (SAFE cannot be turned off in the Sync.)
Integrated LEDs — LEDs glow for easy tracking and orientation.
Long flight times — Spend more time in the air.
MR210 Full range radio transmitter with:
LED indicators for Tx battery power status, binding progress, low/high rates on or off, optics on or off.
Signal loss warning (audible beep).
Auto-flip function (press and release top right button; move right stick in the direction desired to flip).
Picture button (press once to take a static photo)
Video button (press for one second to start/stop video)
Optical Flow on/off (default setting is ON)
Headless Mode on/off (default setting is OFF)
Auto start/stop, take off, and land (by pressing top right button)