Flywoo Explorer LR is a 4" frame for building small mid-range/long-range drone with analog and digital image transmission. This type of drone is ideal for quiet flight in the countryside. There is space in the middle of the frame to install a stack with 16x16 and 20x20mm mounting holes. In the rear part of the frame there is space for mounting the video transmitter. Mounting holes 16x16, 20x20 and 25,5x25,5mm are available. The frame can also accommodate an HD transmission of the DJI O3 or Walksnail Avatar. Motors with both 9 and 12mm mounting holes can be used.