The Japanese Army employed three different sizes of field binoculars during WWII. The type displayed on this page are the largest used.
The following pictures provide a view of the carrying case employed. The carrying straps were built from a khaki colored canvas material. The straps were attached to the side of the case via two rivets per side. The top of the case is secured by a spring loaded leather latch.

The carrying strap could be adjusted by moving the hardware shown on the bottom right photograph.

The binoculars had a brown leather strap so the soldier could wear them around his neck. Markings were found in two places as illustrated on the following pictures.

Binoculars came equipped with an extra pair of eye pieces which were designed to eliminate the glare from the hot tropical sun. These components were housed in a special container attached to the top of the case.
The eyepieces are of a yellow greenish color and have three sets of slits cut on their sides. These eyepieces are difficult to find because they are very easy to loose.