Question about Philips Hue Iris BT

The Philips Hue Tap Dial Switch is generally compatible with Philips Hue products that are controlled via the Hue Bridge. Without a bridge, the Tap Dial Switch cannot communicate directly with the Iris BT lamp as it relies on the bridge to connect to other Hue devices. The Iris BT lamp itself is Bluetooth-enabled and can work with Amazon Alexa and Google Nest without a bridge, but a bridge is required for full functionality with the Tap Dial Switch.