Excellent product, very useful to relay information from my smartphone in the bathroom or the kitchen without interference. Good listening, serious are not adjustable, but the sound surrounds you pleasantly. Light, small, can take anywhere up to 10m of its transmitter. It fits in the hand and the sound that comes out is amazing. No possible personal setting, if not the power of sound, but it is configured correctly. A real pleasure. With this cool vintage look. And promotion, even better! I am very satisfied.