Mature man with glasses and a white shirt assembles a control panel for a quadrocopter, a concept for the study of technology, close-up of a hand

Name: Mature man with glasses and a white shirt assembles a control panel for a quadrocopter, a concept for the study of technology, close-up of a hand
Uploaded: 2018-12-27
Duration: 16 s
Channel: purtoff
Description: Mature man with glasses and a white shirt assembles a control panel for a quadrocopter, a concept for the study of technology, close-up of a hand