Package Contents: 3. HF antennas 4. MMCX antenna cables 5. Micro-USB cable (for connecting Proxmark3 to PC) 6. White blank PVC card Firmware Version: V2 Improved functionality and stability Enhanced LF and HF antennas for better performance Open Source Advantage: The Proxmark3 (hardware & software) is fully open-source — easy to inspect, modify, and develop. Its streamlined design makes it easier for beginners and developers to understand and work with. Need Support? For firmware, software, or any technical questions, feel free to contact us — we're here to help.