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Sony MDR-NC31EM In-ear Binaural Wired Black mobile headset

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Product name:
Product name is a brand's identification of a product, often a model name, but not totally unique as it can include some product variants. Product name is a key part of the Icecat product title on a product data-sheet.
Product code :
The brand's unique identifier for a product. Multiple product codes can be mapped to one mother product data-sheet if the specifications are identical. We map away wrong codes or sometimes logistic variants.
A headset is just a combination of a headphone (with one or two ear plugs) and a microphone. Headsets with one ear plug are used mostly for calling hands-free, while the ones featuring a full headphone are better suited for communicating with your teammates in games.
mobile headsets
Data-sheet quality: created/standardized by Icecat
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only logistic data imported: we have only basic data imported from a supplier, a data-sheet is not yet created by an editor.
created by Sony: a data-sheet is imported from an official source from a manufacturer. But the data-sheet is not yet standardized by an Icecat editor.
created/standardized by Icecat: the data-sheet is created or standardized by an Icecat editor.
Included since: 05 Sep 2014
The date Icecat noticed for the first time that this product was included in the price list of a channel partner
Product views: 3260
This statistic is based on the 76030 using ecommerce sites (eshops, distributors, comparison sites, ecommerce ASPs, purchase systems, etc) downloading this Icecat data-sheet since 05-09-14 Only sponsoring brands are included in the free Open Icecat content distribution as used by 74293 free Open Icecat users .
Info modified on: 27 Jan 2018 20:21:56
The date of the most recent change of this product data-sheet in Icecat.
Long product name Sony MDR-NC31EM In-ear Binaural Wired Black mobile headset :
The short editorial description of Sony MDR-NC31EM In-ear Binaural Wired Black mobile headset

31 Ohm, 13.5 mm, 3.5 mm audio jack, 5 pole
Sony MDR-NC31EM In-ear Binaural Wired Black mobile headset:
The official marketing text of Sony MDR-NC31EM In-ear Binaural Wired Black mobile headset as supplied by the manufacturer

No noise. Just music.
When you’re travelling, the MDR-NC31EM will effectively block out engine and other noises around you and leave you with the best of your music. High-comfort fit earbuds complement your listening experience and let you enjoy your favourite songs video and other entertainment for hours.

Precision listening
Block out all the noise around you wherever you are and listen to your music in all its detail. This digital noise-cancelling headset will give you full-range audio with deep bass, a strong medium register and clear highs. Excellent audio for all types of music.

Hands-free calling
When a call comes in you can use your MDR-NC31EM to enjoy the call. Your hands are free and you have excellent call audio.

Short summary description Sony MDR-NC31EM In-ear Binaural Wired Black mobile headset:
This short summary of the Sony MDR-NC31EM In-ear Binaural Wired Black mobile headset data-sheet is auto-generated and uses the product title and the first six key specs.

Sony MDR-NC31EM, Wired, In-ear, Binaural, Intraaural, 20 - 20000 Hz, Black

Long summary description Sony MDR-NC31EM In-ear Binaural Wired Black mobile headset:
This is an auto-generated long summary of Sony MDR-NC31EM In-ear Binaural Wired Black mobile headset based on the first three specs of the first five spec groups.

Sony MDR-NC31EM. Connectivity technology: Wired. Wearing style: In-ear, Headset type: Binaural. Ear coupling: Intraaural, Headphone frequency: 20 - 20000 Hz, Impedance: 31 Ω, Driver unit: 1.35 cm. Weight: 21 g. Colour of product: Black

Headset type *
A headset is headphones combined with a microphone, or one headphone with a microphone. Headsets provide the equivalent functionality of a telephone handset but with hands-free operation. Types of headsets include single earpiece (monaural) and double earpiece.
Wearing style *
The way in which the device is worn.
Colour of product *
The colour e.g. red, blue, green, black, white.
Ports & interfaces
Connectivity technology *
Cable length
How long the cable is.
1 m
Ear coupling *
Ear coupling describes the way in which headphones or earphones stay attached to, or inside, the ear. There are three common types of ear coupling: circumaural, supra-aural and intra-aural. Circumaural headphones enclose your ears with large pads that suppress external noise. Supra-aural headphones are typically more lightweight and sit on top of the ears with small pads. Intra-aural headphones come in two basic designs and neither style sits on the head itself. The first are ear buds, which sit just outside of the ear canal, on top of your ear lobes. The second type is actually inserted directly into the ear canal and offers some external noise suppression.
Headphone frequency
The range of frequencies (low to high sounds) that the headphones can produce.
20 - 20000 Hz
The effective resistance of an electric circuit or component to alternating current, arising from the combined effects of ohmic resistance and reactance.
31 Ω
Driver unit
1.35 cm
Noise-canceling *
Packaging content
Extra earbuds
Weight & dimensions
Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
21 g
Packaging data
Warranty card
Source Testseek summary Average rating
Testseek has collected 7 expert reviews for Sony MDR-NC31EM 入耳式 雙耳立體聲 有線 黑色 and the average expert rating is 68 of 100. The average score reflects the expert community’s view on this product. Click below and use Testseek to see all ratings, product awards and conclusions.
Source Review comments Score
MDR-NC31EM—yet another poetically-named device. These are the in-ear active noise cancelling headphones from Sony. But, strangely, there's no sign of a power unit or rechargeable battery on the cable.This is because the mini-jack (which has five adaptors...
Good Very comfortable and held in place well, Powerful and immersive, Minimal distortion, Several ANC modes...
Bad Active noise cancellation only works on Xperia, No remote control, Cables tangle easily, Frequencies aren't wellbalanced, Sound lacks accuracy...
Bottom line When it comes to our pick of the best headphones, there's no point in pretending that the NC31EM will make the cut. That said, if you're looking for cheap in-ear headphones, these ones offer comfort and power, along with reliable ANC. But anyone looking f...