This manual covers installation, connection to vehicles and mobile phones, charging, button functions, indicator meanings, applicable models, and…
The Ninebot BT2928 Engine Speaker is a portable audio device designed to connect to mobile phones for music playback or to Segway-Ninebot vehicle models to simulate engine sound effects. The manual details how to install the speaker base and remove/attach the horn unit, as well as how to pair with vehicles in 'Vehicle Mode' (white light) or with smartphones in 'Music Mode' (blue light).
The speaker has four kinds of engine sound effects: single-cylinder engine, double-cylinder engine, V8 engine and V12 engine.
Short press the Mode button to switch between vehicle mode (white light) and music mode (blue light).
A flashing red indicator means the speaker has low battery and needs to be charged immediately.