- MarineCommander™ compatible
- AquaQuake™ water draining function (HM-195B/SW)
- IPX7 submersible protection both for IC-M400BB and HM-195B/SW (1 m depth for 30 minutes)
- Dual/tri-watch function for monitoring Ch.16 and/or call channel
- Priority and normal scan
- Supports 4-digit channels