COP® 1300-MS Radio Case for Modular System black, plug on back for Modular System, for Motorola MTP850 Colour: black Material: synthetic leather Radio holder for Mortorola MTP850 with plug on back to enable attachment to 2185MS modular system receiver with belt loop (receiver to be ordered separately). Cut outs for display and keys in front and for accesories on sides and bottom. The bottom latch may be openend and the length adjusted to accomodate accesories. To attach the pouch to receiver, the pouch must be turned so that the arrow on the back is facing down. Then slide the plug into the receiver and twist the pouch 180° so that it faces up. Turn the pouch facing down and pull out of receiver to disconnect.