It looks very decent, the coincidence of frequencies did not check. The vibration is palpable if you bring it close to the ear. The sound is clear.

I found simple and perfect! Super works and vibrates right. Arrived very quickly and well packed. Arrived intact. Gratitude

Quality so good product, so that some came with Chrome matte other bright

Diapasons sound very short without resonance box

Great product and fast shipping! :)