If it is 'Grey Market', watch out. There is no warranty and no repair support for it. Authorized dealers are not allowed to sell them and if they do, they can lose their dealer status. If there is a problem, you may have to ship it to Asia or elsewhere to buy parts, get it serviced, etc. This assumes that ICOM made it and it isn't some Beijing rip-off.
Outside of the USA, "MARS" is a planet and not a USAR/USAF auxiliary program. If you want to mod your radio to out of frequency operation, use a USA model radio so someone can work on it or get parts.
I bought a high end cassette deck that was 'Grey Market' and it was a nightmare after it started acting up in the 1980s..