translation.en: The engineers have done a phenomenal amount of innovation on this part, and battery life on this product is now 15 hours -- just through a lot of innovative work people have done because they're passionate and motivated to be able to do this.
translation.zh: 工程师们已经在这部分做了大量的创新， 并且这个产品的电池供电时间现在达到了15小时 通过人们的大量的创新工作 因为他们为了能实现它而富有激情和动力。