ok i received my package, and here is my review: mine is the piston 2.0

first and foremost, kudos to the seller baowen for his super fast reply, super fast deal and sending the item fast. he also gave some free gifts as in the pics   

the packaging is nice, simple and beautiful, for a rm 65 earphone, is HAS a better packaging than my sennheiser cx175 and sony xba1 earphones. and the chocolate smell, a nice finishing touch.

the accessories include earphones four pairs of tips(one attached to earphone) and the cable organiser(the black square thing the earphones comes with, that has the one design wording on it), ts free gifts are pouch, cable organiser and some kind of pink stopper i dont know what for. i would like to emphasize again that these additional accessories dont come with the sony or the sennheiser i once bought or even earphones that are more expensive then the pistons (at least below 3 hundred ringgit)

visually, the earphones are stunning, the aluminium finishing touches are superb and i cant even compare this beauty to the plastic sony and sennheiser..you need to have one to see its beauty. its light and looks and feel very durable..as mentioned by jeisern, the difference between 2.0 and 2.1 very obvious visually, with the absence of the metal clip and the other features he mentioned in his post. so i will skip the difference and get on to the audio aspect. only one let down is the earpiece is too soft, make sure you choose the right choice of size and if possible replace with a better earpiece.

ok now on to the audio quality..as mentioned by baowen the ohms are different but seriously after testing the 2.0 and 2.1, they show minimal difference in audio quality and baowen already mentioned the difference in the ohms..the earphones can handle my computer audio full volume and the ipad full volume, so no problem regarding distortion.as expected, the audio is superb and performes better then my sony and sennheiser earphones that are more than 2x the price..bass is deep, the bass resonance is very good, mids are ok and highs are superb..i tested with multiple sources and musics with  different bitrate, and the pistons plays each of the songs i tested beautifully..no distortion, the sound was crisp and clear..dont believe me, try one your self..the price to performance ratio is.......... with 320 kbps songs its very clear as expected but with 64 kbps its a bit mushy and bass is flat, i would recommend playing 128, 256 and 320 songs, i even compare this to by beats pro turbine copper and its as good as the monster pro turbine copper..obviously the pro copper  has slight better sound and build, but at the premium price of rm 1550, i have no right to compare the pistons and the turbine copper pro.

The buttons are good..one additional feature for androids is pressing the play buttons longer opens Google now voice recognition..for iOS the play button only works

comparing 2.0 to 2.1 as i mentioned in my before post, the 2.1 is very very very slightly dry in mids and highs..very minimal that an extreme audiophile can notice, for normal users, the difference is barely there..i prefer the 2.0

ok that is all for my review..pics below and enjoy..

once again, kudos to the seller..recommended and if seller bring in mi4, will definitely buy lol 

10/10 pricing
10/10 to build quality 
7/10 on earpiece quality
9/10 on sound quality

Arvinaaaaa yep i bought my 2.1 from Mi China directly since i am a bit siao on headphones i actually bought 4 units for fun and waited for my RMA from baowen. It is cheaper than getting it in Malaysia what with the initial offerings of RM 85 to 90 for each. Why 4 ? coz i am a bit psycho for hphones, once i find a nice one i buy a few and stock them all over from my bag, car, table etc... and including shipping its still cheaper than getting one from Msian sellers. baowen also gave me  a look
I didn't reply to your earlier response in hopes that when you received your unit then you'd be able to give a real review on the sound.

Agreed that the rubber earpieces are a tad bit to soft for my liking.

Sound wise i ain't an audiophile but i have sensitive ears and i like my bass.

The first batch that i got the headpiece/speaker shape is smaller than the current one.

Based on pictures i reviewed in google-ed the first batch may be fakes. But as mentioned kudos to baowen he was responsive and worked out the details with me to settle my RMA.

Summary - As long as you and your ears happy then all is good. Enjoy them plugs !!! 

PS: Forgot to add, the rubber quality differs in my 2.1 packaging, it is more firm and also has a better feel. Both sound good and i tested it with also 320 songs on my Ipod as well. Kasi test Sam Smith - Stay with me or crank up Boom Boom Clap, the sound emitting from the plugs can really pump it.

For a real treat, get a copy of Adele in 320kbps Live Concert, dim the lights, crank up the a/c and close your eyes, believe me, you'd be transported elsewhere and the sound staging really can move you.

Previously i am used to Superlux can(s), but they can be trifle bit hot and heavy on the head and cumbersome when lying down. With these plugs, super light and sounds great as well. I tested jogging with them and they don't pop back out.

Overall a really decent buy and value for money !