The memory disk was fine, as expected. I stored some photos on it and the quality of the photos was great.

I bought this to use in my Sony Ericsson W580i Jungle Green Phone (AT&T), and I couldn't be happier. Wow. 4GB of storage, and I've used it for photos, video, and audio with great results.

My main reason for purchasing the extra memory was to be able to carry around the review/refresher/practice CDs (rendered into .mp4s) I obtained with Rosetta Stone V3: German, Level 1, 2 & 3, and this fits the bill perfectly.

VERY happy with this product, and I saved more than half price -- compare Sony 4 GB Memory Stick Micro! Go SANDISK!!!!!!!!!!!!!

Five Stars PLUS!

4 Gigs is a great size for holding all the information you need on your phone. If you are looking for this kind of product, this is a fairly simple answer to your needs. Memory size is sure to grow, so the only thing to pay attention to is that there are a couple different physical sizes for memory sticks and if you put the wrong one in it can get stuck.

Works with no problems on both of my Sony Ericcson W580i's. Hard to find anywhere else at time of my purchase.

Great product, great price & great shipping. Works like a charm on my W580i. Though Sony says the phone cannot "see" more than 2GB, my phone seems to recognize its a 4GB card. This with any Sony phone makes any Iphone & its price tag look bad.

well...I'd love to say that it's a great product, HOWEVER...."Digital Media Source" the vendor I purchased it from shipped me the incorrect item, and then refused to work with me at all to rectify the situation. They, in fact, shipped me a cheaper item. I received a usb thumb drive...I ordered a card for my camera. Attempts to contact the vendor were only possible via e-mail. Attempts to obtain a phone number to call, or to have a call placed to me were futile. The 2 e-mail responses I received were 2 words long, and completely unhelpful. Repeated attempts at e-mailing this vendor were simply ignored. I finally resorted to an ugly e-mail referring to the vendor's possible body fat percentage, and propensity for messily eating potato chips on his mothers couch in the basement out of sheer frustration. I will NEVER order anything from them, or ANY Amazon affiliate again. Thank you Digital Media Source and Amazon. You have successfully narrowed the scope of any online shopping I may do in the future, making it possible to quickly weed out vendors that might be out to screw me (or you, consumer).

Took it out of the pack and added to my SE W580i.
Added Music, Photographs and was ready to go...

I was very happy to find that there was a non-Sony brand memory chip for my new Sony-Ericcson mp3 phone. The Sony branded chip was much more expensive. Since I've had experience with SanDisk previously, I decided to give this one a try. Once again, SanDisk came through without a hitch. I'd recommend this to anyone looking for an M2 style memory stick.

cheep and works with the s500i even though sony's site says the s500i can only use up to 2gb

I liked the m2 it works perfectly with my phone. it has a decent amount of memory.

I inserted this into a DSC S650 Sony Digital Camera, and it says I now have 1300 pictures available to take. I ordered this product on Friday, and it arrived on Monday. Now that's fast. Shipped out of Jersey and I live in middle GA. I think the price was very reasonable too. Consider how much you would pay for a 4 Gb thumb drive. Thanks!

I bought this mem to use with my Sony Ericsson P1i. This phone came with a 1 Gb sony m2 mem and you can noticed difference when accesing files. Reading/Writting process with Sony's M2 is quicker than Sandisk. Anyway I am satisfied withs this chip. Also it comes with an adapter. I recommend it!

Most other vendors had a higher price for their 2GB memory sticks. Worked perfectly with w580i even though phone should only be compatible with max 2GB of memory. Product was perfect and delivery (to Hawaii) was fast.

I got 2 of these,one for me and one for my girlfriend,she loves it. And the second one came with a different adapter that fits in my PSP. Cool because if my phone breaks i can use the card with my PSP :)

Have had 0 problems with it, Im using it in my cell phone and love the size it offers. Great buy!

I have a Sony 580i phone. Just plugged the 4mg card in and it worked perfectly with the phone. Card easily pops in and out. I recommend the 4mg, but nothing less than the 2mg.

THIS IS EXACTLY WHAT I WAS LOOKING FOR AT SUCH A GREAT PRICE!!! I'M PROBABLY GOING TO BE BUYING A SECOND. I BOUGHT IT FOR MY NEW CELL PHONE THAT ALSO HAS A WALKMAN FOR MUSIC AND THIS MEMORTY STICK HOLDS SOO MUCH MUSIC! THE PRICE IS WHAT ACTUALLY GOT ME...I PRICED THEM EVERYWHERE AND AMAZON.COM WAS THE BEST!!

This device works great!! It has massive storage and it even came with a slide in adapter to put into your PC!! Worth every pennie!

I was surprised to see the low price on the 4Gb SanDisk Memory Stick Micro(M2) since it was less than half the cost of most other places. Delivery was quick and so far, it has functioned well in my Sony Erikson phone. I thought the $14.90 shipping cost was pretty steep for the tiny package and sure enough, the shipping stamp was just over $2.00, so I suppose that's a way for the company to make a ew extra bucks. Despite that, it was still a lot cheaper than anywhere else I could find, so I'm pretty happy with my purchase.

Works fine. Its nice to have so much memory packed into such a tiny space. The Memory Stick Pro Duo adapter is a bit cheap so you must be careful when pulling it out of something. I cracked mine while trying to pull it out of a Memory Stick Pro adapter.

No problems at all and this is the cheapest I found for a 4 GB memory card for my phone.

Had to return this item due to incompatibility. They help me pick out a compatible product and provided me with the credit for the price difference!!!

Thanks Blue Proton for all your help.

I got this for my SE w580i Walkman phone and it is the perfect size. I still have yet to fill it up with songs and other goodies. It works even though SE says the maximum capacity M2 card that will work with the w580i is 2GB. A little spendy but worth it.

4GB was the sweet spot for me. Works great with my Sony Ericsson W580i cell phone. I waited until the 8GB came out to drive the 4GB price down.

Did not get item it time was supposed to, but item is great works fine so far

This memory stick works great in my wife's sony ericsson w300i phone. I didn't need to format or do anything other than to install it in the phone.

This is a great card at a great price. I bought this card for use with my Sony Ericsson Walkman w580i, which is said to be compatible with up to 2gb cards. Despite the larger-than-accepted size, this card works nicely with my phone. I am able to hold just under 1000 songs on this card, which is quite a large amount.

Apart from working nicely with my phone, this card will work with any device that utilizes a MemoryStick Pro Duo, as the package includes an adapter for this purpose. So if you're looking for a high-capacity memory card that you can transfer between your phone and your Sony digital camera, I'd recommend this one.

I received the product within 3 days and had it in my phone working immediately. No problems.

Very good size memory for my SmartPhone. Pretty fast, plain and simple storage.

A must have for your SmartPhone.

It holds about 4 gigs like it's supposed to. Just pop it in an Ericsson.

If you are intrested in expanding the memory or yor phone pick this or the 2 GB. They are great you will not regret it. I have a Sony Ericsson Cybershot and I use it all the time for my MP3 and Photos.

Not much you can say about a flash memory card. It works great in my Sony Walkman player/phone, even though some sites mention a 2 GB limit for the W580i phone, it had no problem with this 4 GB card.

I bought this for my boyfriend for a birthday present. He loves it because he finally has an iPod substitute in his cell phone. I love it because the price was so low, compared to the 1 GB M2 sticks in Circuit City and Best Buy, and because the 4 GB stick is hard to find. This is perfect for that new Sony phone.

I've never had an mp3 player, so 4gb to store my music on sounded huge. I figured I could put my cd collection on there. But after the 10th cd, the space was half used up. I think getting the 4gb, or holding out for a bigger size- if there is one, would be a better bet. I just wish the 8gig wasn't so expensive. For that price, I can get an ipod.

It's a thankless job... you hardly ever get to hear from the happy people.
Probably because it's suposed to work well, as it does.