No. It does not have remote control.
Yes, you will get a pair of normal earbuds and a pair of swimming earbuds.
No. It does not have.
Sony WS623 has 4GB internal memory and you can further expand it up to 16GB with the help of MicroSD card.
Yes, Sony NS-WS623 is meant for the rough usage and it is both - waterproof and dustproof.