Critical Foot Switch ◎Details◎ (Quoted from another site) Compatible with Bluetooth, it pairs with Critical power supplies. Experience the ultimate freedom, power, and comfort that cordless operation brings. You can also use it as a regular foot switch by connecting it to your power supply with your clip cord. As this item is outside my area of expertise, please check the details of the specifications on another site. Operation confirmed. All accessories are shown in the photos. #KRNTT