How long have you use it?

1 year, no worries!

What is the particular feature you like best and least?

What I like most is its weight, its price and good quality sound, although there is sometimes flickering towards the high frequencies!

Have you tried many other models before acqurir?

No!

How do you report qualitprix?

I find it excellent!

Exprience with, you will do again this choice?

I will focus instead on the brand headphone a little more efficient
Datasheet:
HI FI HEADPHONES HD 433
Sennheiser

. Stereo Headphone Dynamic Open

. Matte black

. Cable 3 m high yield OFC

. Rponse in frquence: 22 - 20,000 Hz

. Principle: dynamic, open

. Impdance Rated: 32 ohms

. Sound pressure max. (SPL / 1 kHz): 94 dB

. THD: <0.1%

. Ear coupling: supra-aural

. Weight (without cable): approx. 118 g

. Connector: 3.5 mm Stereo Jack adapter 6.3 mm

. Length of cable: 3 m, bi-latral, OFC