For "manual" the following results were found: 2 products, 1 category

Attachable flash manual control For clip-on flashes without TTL, the flash output is set manually on the unit itself. In other words, the camera does not control the flash. The user therefore has full control of the flash. The current clip-on flashes from Yongnuo have a built-in receiver and can also be controlled remotely via a corresponding transmitter. Since groups are also possible, sophisticated light setups can be realized with these camera flashes.