The JHEMCU GHF745 F7 HD 3-6S AIO Whoop/Toothpick Flight Controller is perfect for professional drone pilots into racing, freestyle, long-range, and cinematic flying. It features a 50A AM32 4in1 ESC and supports 3-6S batteries. It's O3 compatible. Technical specs: - Size: 33x33mm - Weight: 8.5g - Input voltage: 3S-6S (11.5V-26V)