Note: This device has limited applicability and cannot read all types of RFID cards. Built-in buzzer and LED indicator. Reading distance: 0–6 cm (0–2.4 inches). Compatible with 125 kHz RFID cards. Supports EM4100 ID cards, 5200 cards, AWID cards, EM4305 cards, T5577 cards, and some HID cards. Not compatible with 13.56 MHz IC cards, UHF cards, UID cards, HID iCLASS, HID ProxCard II, or HID ProxKey III. Handheld design for comfortable operation. Powered by 2 AAA batteries (batteries not included). Lightweight and portable. Widely used in homes, residential communities, schools, offices, hotels, elevators, and other locations requiring security monitoring or access control. Color: Blue Material: Plastic Package Contents: 1 × RFID ID Writer 10 × EM4305 Writable Cards Note: Colors may vary slightly due to lighting conditions and screen settings. Measurement tolerance: ±1–3 cm.