MGR250B RemoteThis four-channel remote is the perfect option to control most BOSS Audio Systems. Features: 4-channel Cutout diameter: 3" (76 MM) Zero current draws memory Illuminated soft-touch buttons Conformal-coated PCB 60 watts x 4 channel IPX6-rated (weather-resistant/ dustproof) Inputs & Outputs: USB port USB charging (2A)* Aux-In Compatible with audio output from iPhones, smartphones, and MP3 players Pre-amp outputs (1 pair) Playback: MP3/WMA BluetoothA(R) audio streaming stream and control your favorite music apps Dimensions: Unit (L" x W" x H"): 3.5 x 3.78 x 3.78 in. Unit Weight (lbs.): 0.66 Shipping Weight: 1.066