Feature 1With a remote control and a built-in battery in the remote control, it is easy to control and use, and more convenient. 2The design is not only fashionable and trendy, but also perfectly matches the sound, making your motorcycle more eye-catching. 3Designed with memory card slot (NO memory card included) and USB interface for external audio playing. 4Compact size of 92x67mm/3.6x2.6in, easy to install and it will not affect your cycling. 5The package includes the player, a small wrench, remote controls, which includes everything you need.Item Type: Motorcycle MP3 PlayerMaterial: ABSHost Size: Approx. 92 x 67mm/3.6 x 2.6inRemote Control Battery: 150mAh Button battery CR2025 (Built-in)Applicable Models: Universal for motorcyclesWiring Instructions: White wire to positiveWhite and black wire to negativeGray wire to positiveGray and black wire to negativeBlue wire to antennaYellow wire to remote control receiving antennaRed wire to positive of the batteryGreen wire to negative of the batteryButton Description: Start button is the switchMOD for play pause buttonVOL- for back and volumeVOL+ for forward and volumeCLK for CLOCKMemory card (NOT Included) and USB socket can be installed on the side#FM RadioFrequency Range: 87.5 - 108MHzIntermediate Frequency: 10.7MHzSignal To Noise Ratio: 40dBNoise Limit Sensitivity: 5%#PlayingSignal to Noise Ratio: 40dBChannel Spacing (at 1KHz): 23dBHarmonic Distortion (at 1KHz): 5%Frequency Response: (100Hz: 10KHz6dB)#Power amplifierOutput: Speaker outputSpeaker Impedance: 4: 8Rated Output: 5W2Maximum Output: 7WX2Power Supply: DC12V .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 xMotorcycle MP31 x Wrench2 x Remote Controller Keyfob1 x ManualNotePlease allow for errors due to manual measurement.