The Sun B is a little different from the average Hit camera.
The body has a Trapezoidal shape as you look from above.
Has a red window on the back that has a diamond shaped frame.
The name Sun B is engraved on the top housing, and also on the top of the lens ring.
The company name S.N.K Camera Works is engraved on the bottom of the lens plate.
The camera is rarely seen, so is quite rare.