Herdio Round Waterproof Marine Radio – 4 x 40 W Boat in Dash Gauge Stereo Rec.. MUSIC STREAMING: This marine digital media receiver stereo radio has a built-in technology with 10 feet range for wireless audio streaming and works with all of your favorite devices like iPhone, android, smartphone, iPad, tablet, etc. MULTIPLE CONNECTION: This stereo receiver system is equipped with AUX and RCA input / output connector jacks for additional audio devices and speakers. With this excellent quality Marine dashboard stereo entertainment system with 2.75 LCD digital display that lets you listen to music, Waterproof Construction you don’t have to worry about the elements! UNIVERSAL AND WATERPROOF: This radio stereo combo is made of marine grade waterproof construction in a universal compact round design that fits into standard size tachometer gauge. Waterproof Construction you don’t have to worry about the elements! Dimension: Cutout Diameter: 3.15″/80MM Mounting Depth:3.5″/90MM. Compatible Devices: Speaker, Smartphone. Connector Type: RCA, USB, 3.5mm Jack. Output Power: 40 Watts. We can not accept return, except that in case the item was damaged, broken or the wrong item was sent. We usually respond within 24 hours on weekdays. Thank you for shopping at our store.