The Philips Hue system was released in October 2012 as an Apple Store exclusive. The Hue system was marketed as the first iOS controlled lighting appliance. It uses the Zigbee lighting protocol to communicate, and can be controlled via smartphone apps over Wi-Fi via a Zigbee–Wi‑Fi bridge. The initial system had bulbs capable of producing up to 600 lumens while the newer systems have bulbs that shine up to 800 lumens. The newer system also features Apple HomeKit compatibility.