High Quality Cool Electric Motorcycle Exhaust Pipe Audio E-Bike Speaker with Bluetooth Analog Audio for E-Bike -- 100% new and high quality. 100% 2 times full testing before German packing. Description: high quality motorcycle/E-motorcycle exhaust pipe audio Item No.: YL-073 Product weight: 1.3kg Color: rainbow/carbon fiber Material: stainless steel Working voltage: 12V What is analog audio? As the video showed, so cool. How do I switch to analog audio? Please briefly press the "off" button on the remote control, it will be bluetooth mode, then long press the "off" button to get analou sound mode. Then you use the steering wheel to accelerate to feel the nice and cool analog sound. Function: BT, English FM, wireless remote control, voice-controlled sound lamp, electromechanical speaker Power cable length: 112cm Analog sound cable length: 114cm One length of speaker cable: 53cm, other length of speaker cable ;d speaker: 42cm Bluetooth and FM wiring model method: yellow wire is conecting "+", black wire is cenecting "-". Bluetooth and analog audio: yellow wire means " ", black wire means "-", green wire is for steering acceleration signal wire, other black wire is for steering wheel negative wire. Note: 12V motorcycle user can't choose bluetooth and analog sound, only 12-80V E-bike user can choose analog sound model. Please comfirm what you need and then purchase.