Smooth Operation: Lets you control all groups from the Profoto Control app on your iPad, iPhone, Android smartphone | Bluetooth-Enabled Technology: With a 100m (330 feet) range, Profoto’s Bluetooth-enabled technology AirX enables you to shoot from a distance | Large Screen and Intuitive Interface: The large screen and intuitive interface enable easy access to the various settings, and you can see the settings in absolute numbers on the screen | Settings: You can switch from TTL Mode to Manual Mode with the automated TTL settings intact | Connect Pro Wireless Transmitter: Delivers one hundred channels that each host six groups. Three groups are for TTL usage, whereas the other three are for manual use, giving you optimal control of the scene