Bluetooth earphones are generally used metal dome with adhesive sheet as one button or two buttons.
Metal dome used in Bluetooth earphone, is generally circle shape, diameter of 3mm, 4mm, 5mm these three kinds, but 3mm diameter are commonly used. The force we have: 130g, 160g and 180g. Bluetooth earphone order quantity is quite large, we also have customers to do this.
So if you have needs in this area, please contact us, because we are very familiar with it.