Feature: 1. Portable marine stereo player, with AM/FM radio, USB and auxiliary input for connecting portable media devices. 2. 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. 3. 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. 4. With a sturdy chassis and IP66 waterproof rating, water splashing on the shell from any direction will not have harmful effects on it. 5. High‑quality ABS and metal materials, special UV coating on the surface, strong corrosion resistance, can withstand harsh environments. Specification: Item Type: MP3 Player Material: ABS + MetalSize: Approx. 13.5 x 8.5cm/5.3 x 3.3in Microphone: Approx. 115cm/45.3in Waterproof: IP66 Power (Maximum): 80W Power Supply: 12V Connection Method: Bluetooth connection Interface Type: USB Signal to Noise Ratio: ≥75dB Channel: 5.1 Bluetooth Protocol: 2.0 Operation Mode: Button Shell Material: Metal Support Format: U Disk Speaker Adjustment Method: Button Radio Function: Yes AUX: Support Frequency Range: FM: 87.5MHZ = 108MHZ AM: 530MHZ-1710KHZ Meet the ASTM B117 salt/fog standard Comply with Astm D4329 Specifications: AM/FM Bluetooth audio source, AUX IN, RCA OUT, USB USB Function: Support MP3 AM/FM tuner with 18FM/12AM preset. Package List: 1 x Player1 x Manual1 x Microphone1 x Signal Harness