After the Cheerson CX-OF, here is another toy drone with optical flow sensor called: Flying3D FY919. Optical sensor combined with air-pressure sensor allows perfectly stable hovering.
At first look, the design of the Flying3D FY919 Reaper reminds me about a hover drone from the Avatar movie. It features similar caged propellers, which makes it suitable for safe indoor flights.
In order to allow sporty flight performance, instead of a 1 cell battery it is powered with a 2 cell one. More cells means higher voltage which means faster motors. According to the manufacturer’s specs the 350mAh Li-Po allows about 5 minutes of flight autonomy.
During night flight you will be guided by 4 LED lights, blue ones on front and red ones on back.
Flying3D FY919 drone technical specs
- Cool design with caged propellers;
 - Optical positioning sensor;
 - Barometric air-pressure sensor;
 - Somatosensory control mode;
 - Headless flight;
 - One key to Take-off / Land;
 - HD camera with WiFi real-time image transmission;
 - About 5 minutes flying time.
 
Like, the Eachine E51‘s transmitter, the FY919’s RC is also extensible – allowing to mount horizontally your phone.
Included with the Flying3D FY919 Reaper
- 2.4G remote controller
 - 2s, 7.4V 350mA Li-Po battery;
 - USB Charger;
 - 1 set of 3-blade propellers;
 - User guide.
 


Just got mine and I recorded one of the first real-world reviews of the FY919, find it on YouTube!
Enjoy!