| F121&F121 Pro VS Toy Plane | ||
| Functions | F121&F121 Pro | Toy Plane | 
| Altitude Holding | F121&F121 Pro flight with accurate altitude hold, even through narrow spaces, or no matter how close to the surface (less than 10 centimeters height) | cannot to flight fast and cannot keep Altitude Holding when close to the surface | 
| PID Autotuned | rise and descend at high speed even with Altitude Hold Mode | keep stable reply on slowly speed | 
| FHSS, 67 channels pseudo-random frequency sequence hopping | better anti-interference ability to both the same frequency band and different frequency bands, worry-free for more than hundred pilots competion at the same competition terrain at the same time | can not more than three pilots competion at the same competition terrain at the same time | 
| Professional Transmitter | 2000 meters control distance, FPV racing freely at any flight environment | 100 meters control distance | 
| Professional Charger | More than 18 years professional chargers design experiences guaranteeing safer charging and longer lifespan. Maxmium 2A charging current makes a 650mAh battery takes about 20 minutes to fully charged | more than 1 hour to fully charged a 650mAh battery | 
| Noise Reduction by Software | not only enables the motors of F121 to work without noise during the flight but also makes them more responsive and efficient than traditional 8520 coreless motors, ensures a longer life span | too much noise when flight serious heating makes the motors with short life span | 
| FPV Image Transmission System | The image transmission system that integrates camera and OSD module, ensuring voltage, flight time, power real-time feedback, stable transmission with more than 600 meters telemetry distance and good video photography. | can not FPV racing because of the delay of the image transmission module | 
| Come with Professional Accessories designed for racing drone | Radiolink professional transmitter for racing drone | |
| flight controller with altitude holding by inertial navigation designed for racing drone | ||
| Carbon fiber and plastics | ||
| FULLYMAX battery, 10 minutes flight time | ||
| GEMFAN Propeller | ||
| EWRF Tech image transmission system that integrates camera and OSD | ||
| Hawkeye FPV Monitor: 4.3 inch, 5.8GHz, and forty-eight channels FPV display with receiver integrate, with the resolution of 480*3(RGB)*272, the aspect ratio of 16:9 and response time of 10ms. | ||