Features Intuitive interface design and easy to use. One-button start and quick pairing Programmable and customizable buttons ABS-surface for impressive touch Support all the Bluetooth products of Makeblock The Bluetooth Controller supports all the Makeblock Bluetooth products: mBot, mBot Ranger, Ultimate 2.0, Airblock, Codey Rocky etc. Program your controller to customize the buttons When your Bluetooth controller is paired with a Makeblock Bluetooth robot, you can download the extension file for Bluetooth Controller and upload it to the robot. Next, you can program to customize the functions of buttons. P.S A new feature of Bluetooth controller is on the way: remote-control the animations and games designed via mBlock (PC). Powerful anti-interference makes it perfect for complex applications Impervious to interference with 60+ simultaneously-working controllers within a distance of 10m Part List 1 ×Bluetooth Controller Specifications Name: Bluetooth Controller Material: ABS Working current: ≤25mA Bluetooth version: support 4.0+ Transmission distance: 20m Transmit power: 4dBm Data transmission: Low-latency, packets can be received via Bluetooth device within 100ms Battery: 2 AA batteries Support platforms: MacOS/Windows