A:AnswerYes, Wifi would be the way that you receive your data signal to whatever device you are using. These connect via Bluetooth, a different technology altogether.
A:AnswerThe earphones are warranted against defects in materials and workmanship for a period of ONE (1) YEAR from the date of original retail purchase. Plenty sturdy enough, unless you are constantly getting hit in the head with a hammer.
A:AnswerYou can lower the volume, increase the volume, pause and un-pause, answer and hang up calls. Unfortunately you can not move forward or backwards when playing from a song list.