Proxmark3 Easy is the standard tool for RFID diagnostics, testing and programming.

Technical data:

• Proxmark3 Easy - reader - copier - RFiD NFC SDK replicator
• Compatible with all official software as needed
• According to your preferences, you can use the official "Command Prompt" or "Proxmark Tool.exe" for operation
• Low frequency antenna installed on the right
• LF antenna: 30.41V @ 125.00kHz
• LF antenna: 22.01 V at 134.00 kHz
• HF antenna: 28.43 V at 13.56 MHz
• supply voltage: 3.5 to 5.5V
• current consumption: 50 to 130mA
• dimensions: 54 mm x 86.6 mm
• Thickness: 6.2mm (thinnest), 9.8mm (plus screw), 15.8 (plus low frequency antenna)

Wiki link:

https://github.com/Proxmark/proxmark3/wiki

Set contains:

• Proxmark3 reader
• USB cable
• 1 x 13.56 MHz Mifare 1 S50 PVC card
• 13.56 MHz Mifare UID PVC card
• 3.56 MHz RFID Key IC Tag
• 1x125Khz HID card
• 1 x 125 kHz card T5577