I have been using the product for over a month now and it performs quite well.
battery life is good. Sound quality is very acceptable though not as refined as a JBL Flip II (which is much more expensive). I mostly listen to bands like ACDC ad they sound quite ok till you start reaching 2/3rd's of the full volume then the sound seems to start cracking a bit.
Its not very portable owing to its length 15" approx. so wont be something which you can easily fit in your gym bag :-)
If you want to us...

It does not remember last played mode, While playing in one mode, it changes to other mode by itself without we operating and it is so disappointing, otherwise battery life is good. Sound quality is good.

I expected a much better finish on the product. Its just passable.
Buy a JBL product instead. The FM radio is not worth it.

Brought this amazing device 2 month ago..

Good connectivity thru USB, bluetooth, aux cable, Memory card FM..Good option for an earplug for listening to music.

Value for money.

Superior sound quality...

Brought this amazing device a month ago..

Good connectivity thru USB, bluetooth, aux cable, Memory card..Good option for an earplug for listening to music

FM ( signal reception is quite low, hope this can be improved)

Superior sound quality...Enjoying listening my favorite audio books..

FM, SD Modes are very good. Bluetooth reception is so so. Fills the room with clear music. Nice look. Portronics clarified this as Stereo, but in flipkart it is written as "1 Channel". Bit heavy to handle.