Features:
1. Compatible with profoto AIR TTL remote, wirelessly synchronize the profoto flashes with the camera.
2. Remotely control profoto flashes to shoot in TTL Mode for fully automatic point-and-shoot shots.
3. Control the ambient light, shape light in broad daylight Allows you to use your flash at shutter speeds up to 1/8000s, creat crisp images without motion blur
4. 8 channels (1-8), 3 groups (A-C)
5. Long working range of up to 200m (656ft).
6. support TTL and HSS.
7. Power: 2 x AAA batteries (excluded when shipping); or powered by a power bank through the micro USB port.
Package includes:
1* Wireless Flash Trigger E4,
1* Lanyard,
1* use manual.