These branded vibration resonance speakers are portable mini Bluetooth speakers made for promotional bulk orders. Adopting resonance bone conduction technology, the speaker vibrates the hard surface it rests on to produce amplified sound. It comes with a decorative LED light ring that lights up during music playback. The whole set includes 1 suction cup and 1 magnetic plate so that users can attach them to the walls, glass, and even the ceiling. With its size Φ4.5×3cm and 49 gram weight, it’s also portable enough for carrying with you. We offer custom logo services including laser engraving to show your logo and promote your brand.