The delphin works great for listening to an audiobook while swimming. I swam for 45 minutes listening to my book. The case is so good it retains water. I attach it to my goggles and tuck the headphone wires into my goggle straps.

Battery life has been great, it basically lasts for 4 good swims before i recharge (take no chances). This extends the battery life by a lot. Three times a week before coronavirus, now daily for an hour at a time.

Delphin hammerhead earbuds are a great alternative to bose headphones. The headphones are comfortable and the sound quality is great. Corded headphones use less battery than bluetooth, but i'm pleased with this.

It comes with a stylet which is very convenient. The delphin remote instructions and iphone qr code are on a small note-size blue paper.

The delphine is very hard to use, terribly expensive, will fail often and you will get no tech support. The headphones are really uncomfortable on my neck. The battery life is very poor as well.

The touch screen is very small, like tiny small. It's difficult to navigate because it's so small. The setup is not at all intuitive.

The delphin has no physical volume control. I have downloaded spotify 8 times but can never find it to open. The audible app works fine on my iphone, but it constantly crashes on my delphins.