When it comes to HD displays, great resolution is just the start. Unlike many other tablets, Kindle Fire HD also delivers rich color and deep contrast from every angle, with an advanced polarizing filter and custom anti-glare technology. Low quality sound can ruin your HD entertainment experience. That's why Kindle Fire HD 8.9" features exclusive, custom Dolby audio, dual stereo speakers, and auto-optimization software for clear, crisp, balanced audio.When it comes to HD content, bandwidth is everything. Without it, you get video buffering, slow downloads, and dropped connections. Kindle Fire HD solves this issue by using state-of-the-art dual-band, dual-antenna Wi-Fi for over 40% faster speeds.