First of all, the sound quality of these headsets is fantastic! Using these, we're able to communicate gently with one another whenbacking the trailer, docking the boat, or climbing the mast. This is so much nicer than yelling at one another (I'm sure others at the dock appreciate it too).I gave these 4 stars for comfort. It's not that their uncomfortable, they are just too large for my tiny head. They fit my husband fine, but I have to come up w/creative ways to keep them on my head when outside the helm station for fear they'll fall into the drink or down from the mast onto the deck.As far as battery life, we learned quickly that leaving the batteries installed when not use was a no-no. When we went to use them to dock our boat, the batteries were dead! BTW, this is clearly outlined in the instruction manual... Now, we remove the batteries every time we finish using the headsets. We can get 3 uses out of them before they start beeping (indicating they require charge).The cost of these were w/in our budget, so we are happy to charge them every third use.The headsets come in a very nice/ample sized storage case. The case is plenty large enough to store not just the headsets, batteries & charger, we are able to store other items in the case as well (ex: sail & cold weather gloves).It is my opinion that this a great purchase and I would definitely purchase them again.