Best answer: Like the W1 in the original AirPods, the H1 chip in the second-generation AirPods handles the fast pairing with Apple devices, maintaining the Bluetooth connection, and more. But the H1 uses a newer version of Bluetooth for better, faster connections, adds "Hey Siri" support, and better manages power for increased talk time.New and improved: Apple AirPods 2 ($160 at Amazon)The originals: Apple AirPods (1st gen) ($150 at Amazon)