I was well surprised with this product. I bought a pair to use mainly to test amplify custom built instruments and sculptures made of different materials as my field is more within the visual arts than music. I have out of curiosity also used them on some acoustic instruments and got very decent and usable sound that compares well with my acoustic guitar's built in systems.
The pickups come snugly packaged in a box which is reusable and I use it to carry them around in it and after multiple outings it still looks the same as the day I got it so I would not recommend discarding the packaging. The Pickup in itself is well finished with an attractive maple finish and a decent length permanently attached 1/4 inch jack cable. Whist a non detachable cabe can be inconvenient at times, it is a small price to pay for an otherwise well put together product.
The sound quality is not out of this world as one would perhaps expect given the price point, but if you are on a budget like I am most of the times, this is a great buy.
Whilst the sound is not top notch is still remains very usable and with a little of tweaking this little jewel can produce very reasonable results. As with all acoustic instruments the placement is crucial an does vary considerably from one instrument to another so take your time to find the perfect spot and it will work like a charm.
Another little gripe I have with the product is the white 'blue tacky' like substance supplied in order to temporarily attach the product to the instrument. I works kind of well for the first couple of applications but then deteriorates quickly, collects lots of dirt and starts to leave a stubborn to clean residue. The solution I found to this is to use plain old masking tape. I might not look pretty but it works all the time.
Overall I would recommend this product to anyone, it is well made, well priced and can be surprising versatile if used correctly.