"Upgrade your on-the-water music experience with the Boss Audio AM/FM MP3 Mechless Receiver with Bluetooth and 4 Speakers. This Boss boat receiver with speakers features the acclaimed AM/FM MP3 Bluetooth receiver that delivers weatherproof performance. Bluetooth connectivity offers hands-free calling and wireless audio streaming, allowing your phone to remain safely in your pocket or dry storage. USB, SD, and auxiliary inputs ensure you can connect to almost any device, plus you can even charge your smartphone or media device while listening to your favorite music. Four 6.5"" MR6 marine speakers provide clarity and impressive volume along with the durability marine environments demand. Front and rear preamp outputs make future expansion a breeze. A UV-protected faceplate ensures marine-grade durability to stand up to harsh conditions. 50W x 4 max power output. Includes male-to-male connector and custom grilles. Outstanding boat stereo combo kit AM/FM/MP3 mechless Bluetooth receiver Weatherproof design withstands harsh marine environments USB, SD, and auxiliary inputs for compatibility with a variety of devices Bluetooth connectivity for hands-free calls and wireless streaming Charge your device while playing media Front and rear preamp outputs 4 MR6 Marine Speakers MRANT10 antenna Male-to-male connector 50W x 4 output UV-protected faceplate Includes custom grilles"