Large bottle, will last for awhile. These dont come with interchangeable ear cups, like some other headsets. We love it. Out of the 20 or more I?ve ordered, this is only the third one I?ll keep. Normally I love Crocs. Super cute on and a comfortable heel height. This one is squishy (but not too squishy! Now I need to order another pair. Ive started using voice typing recently as a way to get more work done faster and to give my fingers a break. All the AT mics are great mics for their price.