DC12V Motorcycle MP3 Power Amplifier Music Audio Player 87.5‑108MHz with Remote Controller Keyfobs Item Type: Motorcycle MP3 Player Material: ABS Host Size: Approx. 92 x 67mm/3.6 x 2.6in Remote Control Battery: 150mAh Button battery CR2025 (Built-in) Applicable Models: Universal for motorcycles Wiring Instructions: White wire to positive White and black wire to negative Gray wire to positive Gray and black wire to negative Blue wire to antenna Yellow wire to remote control receiving antenna Red wire to positive of the battery Green wire to negative of the battery Button Description: Start button is the switch MOD for play pause button VOL- for back and volume VOL+ for forward and volume CLK for CLOCK Memory card (NOT Included) and USB socket can be installed on the side #FM Radio Frequency Range: 87.5 - 108MHz Intermediate Frequency: 10.7MHz Signal To Noise Ratio: 40dB Noise Limit Sensitivity: ≤5% #Playing Signal to Noise Ratio: 40dB Channel Spacing (at 1KHz): 23dB Harmonic Distortion (at 1KHz): ≤5% Frequency Response: (100Hz: 10KHz±6dB) #Power amplifier Output: Speaker output Speaker Impedance: 4: 8 Rated Output: 5W×2 Maximum Output: 7WX2 Power Supply: DC12V