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The ES80 is a larger version of the CS60 made specifically for the KX3 Shack-in-a-Pack and the KX3 Pack. The ES80 is large enough to hold the KX3, PX3, and accessories.
A: The ES60 is not large enough for the KX3. The ES80 was designed to carry the KX3 and the PX3, along with options such as MH3 hand mic, AX1 Antenna, and several other options.