The Think Tank EP-NSI eyepiece is required to use any Hydrophobia rain cover with Nikon cameras featuring screw-in style eyepieces. Compatible models include the D3S, D3X, D4, D800 and D700 cameras.

Compatible with the Hydrophobia 300-600 V2.0, Hydrophobia 70-200 and Hydrophobia Flash 70-200.

Compatible Hydrophobia Rain Covers:
Hydrophobia 300-600 V2.0
Hydrophobia 70-200
Hydrophobia Flash 70-200

Compatible Nikon DSLR Cameras:
D2x
D2xs
D3
D3s
D3x
D4
D700
D800