This is for a vintage transistor radio earbud case that’s made with black leather.  There is a top front snap closure and a leather carrying strap on the back with a snap closure.  It measures approximately 1 ¼” L x 1 ½” H x ¾” W.

NOTE:  The leather stitching is intact and the snaps work, but the felt on the left inside is coming off a little on the top edge (refer to photos).