Bull ****.
First of all: it is crappy design. Look at that two thing sticks out.
Second: If I go to a field trip, 5 hours play back is too short. I still remember people mocking Samsung when they released their Bluetooth headphone.
You do realize that the case you will carry them contains a battery and also charges them right? Pop them out of your ears after 5 hours and charge them for 15 whole minutes for another 3 hours of listening.