1、Portable marine stereo player, with AM/FM radio function, USB and auxiliary input for connecting media devices. 2、Support Bluetooth, it can wirelessly transfer music from your for iOS phone/ for Android or similar Bluetooth devices. A cuircuit output is also provided to connect to an external amplifier. 3、There is an AM/FM radio and RCA Aux audio input on the back. When you connect an MP3 player or flash drive to the USB port on the back, it can also play your digital MP3 files. 4、Features a sturdy base and IP66 waterproof rating, which means that water splashing on the housing from any direction will not have a harmful effect on it. 5、High‑quality ABS and metal materials, special UV coating on the surface, strong corrosion resistance, can withstand harsh environments. Item Type: MP3 Player Shell Material: ABS+metal Purpose: Marine speaker Remote Control Battery: 1 x CR2025 button battery, 150mah (included) Waterproof: IP66 Function: Waterproof, radio, dustproof, Bluetooth USB Applicable Scenarios: Car, outdoor, yacht, marine ATV UTV Connection Method: Bluetooth connection Interface Type: USB Frequency Response Range: 60Hz-15KHz Output Power: 4x45W Signal to Noise ratio: ≥75dB Power Supply Mode: External 12V power supply Channel: 5.1 Play Time: About 10 hours Extended Storage: Not supported Bluetooth Protocol: 2.0 Number of Speakers: 4 Effective Distance: 8 meters Operation Mode: Button Applicable People: Universal Display: Yes Play Format: MP3 Whether to Support APP: No Support Format: U disk Speaker Adjustment Method: Button Is There a Radio function: Yes 1 x MP3 Player 1 x Manual 1 x Remote Control 1 x Signal Harness 2 x Screws 4 x Nuts