MLS-100 MLS100 Original Yaesu High Performance External Speaker The Yaesu MLS-100 is a high performance external speaker that will match the output requirements of almost all Yaesu transceivers. Dimensions Height: 3.75 in. Width: 5.5 in. Depth 1.75 in. Includes: 6.5 foot Audio Cable, 3.5 mm standard, 2-contact speaker plug