The new small 1.7 GHz Audio/Video transmitter is a special design for Military applications capable to work in extremely low or high temperature range. This transmitter has 8 easy to change channels and 500 mW RF power. MX-1700D/6 model works on 6 V DC. MX-1700D/12 model works on 12 V DC.
Dimensions: 1.7 " X 1.0 " X 0.4 ".