Here is the HummingBird F4 Pro 1S: The second generation of the HummingBird F4 products. 

Compared to the 1st Generation, we changed the Gyro to Bosch BMI160 which is smaller and more reliable compared to the MPU6000. (It can't use the same firmware target as the 1st Generation HummingBird F4 1S.) We also changed the camera plug to have a JST 4 pin (OSD Signal, BeeSign signal, 5V, GND) so now you can either use BeeSign Control or BeeSign OSD (more explanation of the BeeSign is down below.) Also, we upgraded the propeller to the newest Azi Quad Blade 31mm Super balance Prop. 

Last but not least, we also optimized the layout and increase the high current layout trace to handle more power.

Dry Weight 22g

Camera Specs:

25mw VTX, non-switchable power

Total weight with Goober canopy: ~4.9 gr. 120 FOV 700 TVL