I added 20 lbs to my Romanian deadlift today vs two weeks ago, and then happily went on to do Bulgarian split squats with two 60 lb dumbbells with no grip fatigue (previously, even the 45s gave me fits). You need to adjust volume through the phone. Aside from that, the founds are very clear and crisp, which is nice when I use this to listen to audiobooks and for phone calls. Super soft on your foot and very comfortable for standing, walking and working 9 hrs straight. Trust me, if I could fit a few more of these in my closet I would buy them in a heartbeat. Product definitely works as far as heating up the body, there is sweat dripping off mine after I use it. It latches on to the top of the case and uses the opening motion to lift the enclosure out of the case and "present" it to you. So here we go:Shipping - It arrived as they said it would. I love Sony, and all of their products, but the wires on these headphones are not very sturdy. Head of the tool is also loose and rattles when shaken.