This Fusion Electronics Bluetooth Interface Module provides communication between Fusion marine stereos with RCA AUX input to enable Bluetooth wireless connectivity.• Dimensions: 1.65 Inch x 2.32 Inch x 0.59 Inch• Voltage: 10.8 To 16 Volt• Bluetooth Range: 33 Feet 10.8 To 16 Volt DC Power Input A2DP V3.0 Class 2 Bluetooth; Up To 33 Feet Bluetooth Wireless Range 2.4 Gigahertz @ +5 dBm Maximum Wireless Frequencies