The noise reduction is a joke.
After only 4 months of use the headset in the trash because one of the branches tiends the right earpiece has broken! Yet I was aware of its fragility ... But apparently JVC has used a very poor quality of plastic
So a council go your way!
Characteristics (data JVC):
Frequency Response: 10-21000Hz
Impedance: 30/36 ohms (Reduction ON / OFF)
Sensitivity: 113 / 114dB (Reduction ON / OFF)
Neodymium magnet transducers 30mm
Relatively small and lightweight (160g with battery)
Noise Abatement (Noise Cancelling =) up to 88% (18.5 dB at 200 Hz) via cursor to the right atrium
Sound limiter function (volume reduction) for use in noisy environments via cursor to the left atrium
Requires 1 AAA alkaline battery (LR03) inserted into the right atrium of use given for 100h
1.20 m retractable cord and adjustable in length, with tip Mini-Jack Plug the left atrium to arrest
Closed headphones equipped with swivel earcups in all directions (DJing OK)
Hoop reinforcement with plastic foam, height adjustable and collapsible for transportation
Pads soft and comfortable (memory foam form)
Supplied with battery, carrying case and dual plug adapter jack plane
I just bought it not tested yet.
However I have a JVC HA-S350-B quite similar (+ small but without the noise canceling) whose quality audio delights me, so ...
Its characteristics seem ideal for use in portable listening travel type or "monitoring" video: correct size and weight (size headphones Hi-Fi, or between the monitors and Mp3 basic) in view of the embedded technology and it is very comfortable : stack the pads are placed over my ears without locking them ideal for me out of context monitoring!
The construction seems good but with the usual caveats when its strength and pads wear out with time ...
I was interested in the Audio-Technica ANC-7 (too expensive at 180 &euro but for the price (80 € in D. .. y) the headphone has all the features I was looking for and even + (Retractable) for nomadic use every day!