[. . . ] 10-character channel names and all settings are displayed at the same time. Optional COMMANDMIC® Our COMMANDMIC® makes it convenient for using the IC-481H-A-E from a separate cabin or tower. It allows you to remotely control all functions of the IC-481H-A-E (except DSC operation). [. . . ] It allows you to remotely control all functions of the IC-481H-A-E (except DSC operation). It offers its own large, easy to read LCD, is easy to hear and is also waterproof! Easy to hear speaker The photo shows actual display size. A newly designed large speaker grill improves the output of the frontmounted speaker. The result is that the audio sounds even louder than the 4. 5W (typical) output capability, even over wind or engine noise. And more. . . Optional COMMANDMIC®, HM-127W Built-in DSC capability that meets RTCM SC101 The DSC watch function monitors Ch 70, while receiving another channel. Up to 30 DSC IDs are memorized. Rugged waterproof construction By spraying off any salt with fresh water after your outing, the IC-481H-A-E is designed to work for many years. (Equivalent to JIS 7, submersible 1m/30min; except cables) · Dual and tri-watch functions for monitoring channel 16 (or channel 16 and another call channel), while receiving on another channel · Position indication when connected to GPS (GPS is not included) · Adjustable LCD backlighting and key illumination in 4 steps for nighttime operation · Supplied remote function Mic. for convenient channel selection · NOAA weather channels with alert function · Simple and easy tag scanning system · Available in black or white VHF MARINE TRANSCEIVER SPECIFICATIONS GENERAL RECEIVER · Frequency range : Tx 156. 025­157. 425MHz Rx 156. 050­163. 275MHz · Usable channels : All International, U. S. A. * and Canadian* channels; plus 10 weather* channels (* U. S. A. · OPC-999 EXTENSION CABLE FOR HM-127B/W 6m (20ft) of extension cable for additional lengthening for use with COMMANDMIC®. HM-127B (Black) HM-127W (White) · HM-127B/W REMOTE-CONTROL MICROPHONE Up to 21m (70ft) of freedom from the IC-481H-A-E with two OPC-999 EXTENSION CABLES. Allows you to control all functions of the IC-481H-A-E (except DSC operation). Size (W×H×D): 63. 5×125. 0×31. 4mm; 21/2×429/32×11/4in. Weight (approx. ;except cables): 150g ; 5. 3oz Supplied accessories : · Mic. hanger · 6m (20ft) of cable · Mounting base for cable connector Please note that the HM-127B/W is not compatible with the HM-134B. [. . . ] Weight (approx. ;except cables): 150g ; 5. 3oz Supplied accessories : · Mic. hanger · 6m (20ft) of cable · Mounting base for cable connector Please note that the HM-127B/W is not compatible with the HM-134B. [. . . ]