FPV headset with receiver, Eachine VR 007 provides basic features for a very favorable price. High quality screen with 4.3" diagonal size will provide you with intense flying experience. The battery includes is good too last several hours of operation and it can be replaced by any other kind of 2s battery. The receiver supports all 40 channels you can typically need. The headstraps can be adjusted to your size.
This FPV headset will give you all you need for a price that can be hardly beaten.