The box on the left is the gunner's optics, its the primary optics on the tank.
The commander has his own small periscope optics on the right, but it is very rudimentary. Probably only has low powered magnification, and I would be surprised if it had decent night vision modes. At most I'm expecting similar night vision performance to basic personal NVGs.
Its the gunner's sights that has got all the goodies, like good long distance passive NV, thermal etc.