A:AnswerThis works with my cordless phone I use for my landline. I have Panasonic cordless phones and they have a jack to plug in the headset. You have to have phones with the correct jack to plug in the headset as the headset is not wireless. And I had a hard time finding landline cordless phones that had a jack for the headset, Panasonic was the only phones that had a the jack.
A:AnswerThis item is just a newer, better model. The mic is reversible so you can use it on either ear and the ear pad is slightly larger - so an upgraded version from the previous model.
A:AnswerYou would need to check with Best Buy on whether or not there are any restrictions on applying rewards. I do not know of any reason they would not.