Amazon
Revolving cylinder engine Weight: 150 grams Blade made of carbon and titan 1 hour's charging time allows for 80 minutes' operation without the cable Speed: 29,000 revolutions per minute
Revolving cylinder engine Weight: 150 grams Blade made of carbon and titan 1 hour's charging time allows for 80 minutes' operation without the cable Speed: 29,000 revolutions per minute