The development, called sEMG-RD, uses the skin surface on the wrist to record electrical signals transmitted from the brain to the muscles. Thanks to sensitive sensors and a trained neural network, the bracelet accurately interprets commands. No individual calibration is required — the system works out of the box, relying on an extensive database collected from thousands of participants. sEMG-RD

The basis is a special design of blades with a variable angle of inclination: in the air, they create lift, and underwater, they row, allowing precise control of movement. Switching between modes is almost instantaneous, and such drones are sought after for underwater research and rescue operations