Definition: In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.
Input: I really like these headphones. The sound isn't the best I've ever heard, but far better than you'd expect from $30 headphones. The battery life is amazing--I can get through two 8-hour shifts at work before having to recharge. I would happily give 5 stars, except that after about 3 months, the left earbud just stopped working completely. However, I emailed the seller and they just sent a replacement, no questions asked. It took about a week to get the replacement. So you really can't beat that. I'll see how long this second pair lasts. Hopefully I'll have better luck. If they break again, I'll update. Update: My replacement pair lasted 6 weeks until left earbud stopped working. So, im officially calling these trash.

Great headphones, broke rather quickly, but replaced immediately.