Ubertooth One is an 2.4 GHz wireless development platform for Bluetooth experimentation. Based on the powerful LPC175x ARM - microcontrollers and full-speed USB 2.0, the Ubertooth One is a great way to develop custom Class 1 comparable Bluetooth devices. The entire board is only two and a half inches long, with a USB-A connector on one end and an RP-SMA connector on the other. One thing that sets Ubertooth apart from other Bluetooth development platforms is that it not only has the to send and receive 2.4 GHz signals, it can also operate in monitor mode, which monitors Bluetooth in real time. This mode of operation has existed in low-cost WiFi modules for years and has seen countless uses in research, development and security audits, so the Bluetooth standard has not had such a solution. Plus, since it's a completely open-source platform (software and hardware), schematics and code can meet all your needs. Updated version: LPC1759 512K FLASH feature: 2.4 GHz transmit and receive. Transmit power and receive sensitivity are comparable to Class 1 Bluetooth devices. Standard debug connector (10-pin 50- JTAG) In-System Programming (ISP) Serial Connector Expansion connector intended for Ubertooth communication or uses. six indicator lights 2.4 GHz duck antenna included Note: In order to open the schematic and board design files in code package, you will need to download KiCad, an electronic design automation software package. Material: ABS+Metal colour: black Package Contents: 1 x for Ubertooth One wireless receiver transmitter (with antenna) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.