Water and salt can be a marine source unit's worst nightmare. Our M608 source unit is IP55 tested and certified to provide you the best in water intrusion and salt water protection in its class, at the front panel where it's most exposed to the elements. Internally, rubber gaskets stop water in its tracks and integrated drainage channels keep water out, with an IPX3 tested and certified stainless steel chassis for protection even if water manages to seep into the console. Its single DIN chassis and face make it an excellent replacement system for smaller or older boats, while its upscale design fits right in with today's highly stylized boat consoles and cabins. The two-line LCD display is able to show the information you need. The 13-digit 2-line display on the M608 allows characters to be displayed clearly in all lighting conditions. Frequency bands FM/AM/Weather Band FM Tuner Frequency Range 87.9 ～ 107.9 MHz (0.2 MHz STEP) AM Tuner Frequency Range 530 ～ 1710 kHz (10 kHz STEP) Weather Band NOAA Frequency Range 162.400MHz ～162.550MHz Channel 1 : 162.400MHz Channel 2 : 162.425MHz Channel 3 : 162.450MHz Channel 4 : 162.475MHz Channel 5 : 162.500MHz Channel 6 : 162.525MHz Channel 7 : 162.550MHz Bluetooth Profile A2DP (Advanced Audio Distribution Profile) AptX AVRCP (AV Remote Control Profile) SPP (Serial Port Profile) SSP (Simple Secure Pairing) Bluetooth Auto Connect ● AUDIO Maximum Power Output 50 W × 4 High Pass Filter / Low Pass Filter ● 60/90/120/Through GENERAL Dimensions (W × H × D) (Inches) Chassis Area (No Escutcheon): 6 31/32 x 7 43/64 x 1 31/32 Escutcheon: 7 41/64 x 15/16 x 3 25/64 Dimensions (W × H × D) (mm) Chassis Area (No Escutcheon): 177 x 195 x 50 Escutcheon: 194 x 24 x 86 Low Consumption Mode as Power Off