I do not know MP21 from Soundmagic,but it seems it is a latest new version,I found a review at :
Half the price, Twice as Good! – Earphone w/Mic for iPhone, Mac and PC! - VR-Zone IT & Lifestyle Forum!
That guy sell it for 40$ ,I see dealperfect sell jus for 28$ ,I think the price is OK.
MP21
Introducing the MP21 iPhone headset from SoundMAGIC, with excellent sound and one touch call answering button.
VRZ PROMO PRICE S$40 (U.P. S$50)
Price inclusive of S$2.50 registered postage, S$3.00 postage rebate for 2nd set onwards.
You will not find a better deal elsewhere, I assure!
Featuring:
Super bass response and outstanding detail.
One-touch call answering button for iPhone
One-touch music control for iPod
VOIP ready for Mac and PC*
Ergonomics design for ultimate listening comfort
Comfortable sizes of surely fit earbuds
Superior noise isolation near -20dB
*VOIP for MacBook: Just plug it into your MacBook earphone jack, both the mic and stereo earphone will be working out of the box!
*VOIP for PC: Included in the package is the PC adapter which allows you to split the MP21 into 2 mini jack for stereo and microphone to your PC.
Technical Specification:
Driver: 9mm neodymium magnet
Impedance: 12 Ω
Sensitivity: 97dB±2dB at 1mW 1kHz
Frequency Response: 15Hz~22kHz
Rated Power: 2mW
Max. Input Power: 20mW
Plug: Gold-plated 3.5mm (L angled)
Weight: 8g
Cable: 1.2m
Mic. Frequency: 20Hz~16KHz
Mic. Sensitivity: 58db±2dB/mW
Available colors: Black, White, Pink
Reviews:
This review is based on the 3 weeks experience with MP21 with at least 2 hours of average usage every day. (oh yes, I tested it before getting them in, so you are assured that it is GOOD!)
First - Sound:
Yes, it is great, finally SoundMAGIC did it and catch up to the trend for iPhone. Stuck them in my ear, and well, more than what I’ve expected. It has what every one of you looked for, its sound signature is very popular in my opinion, and will suit most people (more like the Sony earphones). The bass response is super and fast, which make it good for fast track songs. Mid and high are clear. (I shall wait for you guys to write some better reviews with some jargons).
Second - Accessories:
Its accessories are simply amazing. Included in the box are 4 sizes of different earbuds that will surely fit your ear. A pair of earhook for over the ear usage to minimal microphonics. A small travel pouch (sealable one). And best of all, the stereo and mic splitter, which make the magic of enabling it to plug to your PC for whatever VOIP applications you want to use.
Third – Functions:
Plug into my 2G earphone, it works well with its L-shape jack nicely slot in. Make a call from another line and pickup with one-touch, the other party can clearly hear me without having to hold the mic toward my mouth. Launch iPod on my iPhone, with the one press of the button -- music play, another press -- music stop, double press – next track, triple press – previous track.
Plug into MacBook for stereo and mic, voila, Apple are really smart innovators, they’ve integrated the mic jack into the stereo earphone input jack, worked perfectly. And it worked the same for PC with the included adapter that split the stereo and mic signal.
Forth – Comfort:
First glance on it, its appearance looks like PL20 and many other IEM like SkullCandy, etc. But with one small little difference – its earphone tube is abit slanted. That’s not a flaw but the ergonomic design. That little tweak really make it much more comfortable, as compare to PL20 that I’ve used which give me some pressure discomfort on the ear after long hours.