Brand N/A Model N/A Quantity 1 Color Black + green Material Aluminum alloy + PCB Features Insert the bluetooth extension board directly into the Arduino main control panel to strengthen the bluetooth capacity of it. Specification Bluetooth V2.1 Application Insert the bluetooth extension board directly into the Arduino main control panel to strengthen the bluetooth capacity of it. English Manual/Spec Yes (www.veskys.com/Instrucuction Manual/0113051123414538.zip) Other It can work with Ethernet and SD expansion board; Voltage: 5V or 3.3V. A product for arduino that works with official Arduino boards. Packing List 1 x Module