Polk UM2 Bluetooth Marine receiver

 Two-piece modular design (commander and hideaway module)
• Waterproof commander and module
• Four zone volume controls when connected to UM2DSP
• App Ready- Control main functions from most Bluetooth®-enabled
devices with the Polk Ultramarine app
• Bluetooth streaming audio (A2DP) and controls (AVRCP)
• SiriusXM-Ready (requires SXV300V1M tuner and subscription)
• 18 FM/12 AM/ 18 SAT radio station presets
• 7-channel NOAA weatherband
• USB for MP3/WMA playback
• Full iPod/iPhone via Bluetooth
• 4.3-inch full color TFT display
• Remote control ready (PRC100BC or PRC200BC sold separately)
• 12 volt DC power
• Non-volatile memory
• EQ presets
• Auxiliary line-level audio input (RCA)
• Four-channel line-level audio output (RCA, front and read)
• UV and Corrosion resistant
• Conformal coated circuit boards
• Low battery warning
• Silicone rubber protective cover included