Although the downlight can be added to the Philips Hue App through the Hue Bridge, it cannot be mapped to HomeKit. All genuine Philips Hue lamps can but not the Nue ones (I guess Philips prevents it). This product is useless for anyone relying on HomeKit for home automation, like myself.
In terms of hardware, quality looked good. However changing the colours did not create a smooth transition. These are inferior to the genuine Philips Hue ones.