Sony Rollei Pro Radio Transmitter for Sony
Easily attached to the camera via the hot shoeUsing of up to 16 channels and 3 groupsSetting of different modes: TTL, manual, High Speed Sync, Freeze ModeRadio transmitter with 2. 4 GHzControlling with Rollei App via Bluetooth)Functions of the appAvailable for iOS and AndroidChanging of mode settings such as