Overall great headphones. Ive used the Howard Leight Impact Sport and the Peltor Sport Tactical 100 and Im liking the Peltors way more because of the ear seals on the Peltors. The battery: Its big, and it lasts all day and often fairly far into the next day. I received the original MMI Cable as a gift from the dealer and it died after 3 months, which led me to buy this Bluetooth cable on Amazon. Love these Birkenstocks. Thanks very much. She is 5ft6in and size uk 10/12, so we ordered a medium. Pretty annoying but its the best I could find for now. All of them were poor sound quality, and uncomfortable. Im also on my feet all day long so those shoes need to be comfortable.