Bose has announced upgraded QuietComfort Ultra wireless earbuds with better adaptive ANC that can more smoothly adapt to sudden spikes in noise. The QuietComfort Ultra (2nd Gen) are expected to be available through Bose’s online store starting later this summer for $299 in black, white smoke, and deep plum color options. The new QuietComfort Ultra (2nd Gen) earbuds will be available in deep plum, white smoke, and black. Image: BoseBose says the upgraded QuietComfort Ultra earbuds leverage technology originally developed for hearing aids to improve call quality by reducing background noises like wind or the murmur of a busy office. Bose has doubled the battery life in the new version of its SoundLink Micro speaker.