Marine Gauge Receiver 4 Inch Display Built in Amplifier Bluetooth MP5 Player Marine Boat Stereo Gauge Receiver Item Type: Sound Systems Marine Gauge Receiver Material: PC Model: JI8415A Application: Yachts, Engineering Vehicles, Excavators, Forklifts, Trucks, Cars, Vans, etc. Compatible Formats: AVI MKV MP3, WMA, BT, USB, SD, FM Mid Frequency Range: 10.7MHz Power Requirements: DC9V-12V Sensitivity: 15dB Load Impedance: 4 x 4Ω Signal to Noise Ratio: 50dB Stereo Separation: 30dB (1KHz) Tone Control: ±8dB Sound Output: 2ch and 4ch Line Outputs Maximum Output Level: 1.5Vrms (±3dB) Frequency Response: 20Hz-20KHz Signal to Noise Ratio: 60dB Spacing: 50dB Connector Types: USB, 3.5mm Jack AM 522-1620KHz FM 87.5-108MHz Machine Size: Approx. 110 x 110 x 74mm / 4.33 x 4.33 x 2.91in Installation Size: Approx. 110 x 64 x 74mm / 4.33 x 2.52 x 2.91in Remote Control Battery: CR2025 Button Battery x 1 (Not Included)