The existing mass. Currently there have 4.9 billion Bluetooth devices shipped. It might be shit, but it's the shit we have and know. https://www.statista.com/s

The existing mass. Currently there have 4.9 billion Bluetooth devices shipped. It might be shit, but it's the shit we have and know. https://www.statista.com/statistics/1220933/global-bluetooth-device-shipment-forecast/ https://www.statista.com/statistics/1220933/global-bluetooth...