Handheld shape design with comfortable grip and high-quality construction. Features two buttons for simple operation and operates standalone without the need to connect to a computer or PC, making it easy to use. Built-in individual LED lights and buzzer indicator. Reading distance: 0–6 cm. Designed to copy only 125 kHz RFID cards. Compatible with T5577, 5200, EM4305, and EN4305 cards. Specifications: Read: 125 kHz ID cards or keys (EM4100, TK4100, etc.) Write: 5200, EM4305, T5577, 8310, 8268, etc. cards or keys Built-in: Individual LED lights, buzzer indicator, transceiver antenna Power supply: 3V (2 x AAA batteries, not included) Durability: Read and write up to 20,000 times Note: Device is tested before shipment. If the device does not read a card, the card may be of an unsupported type. If the device does not write to a card, the card may be of an unsupported or non-writable type. These conditions are not due to device defects. Product appearance, color, and printed text may vary slightly between production batches; these variations do not affect functionality. Type: 2 Keyfobs Color: Blue Material: Plastic Package Contents: 1 x RFID Card Reader Kit Note: Other items not included. Slight color variations may occur due to lighting and display differences. Measurement error allowance: ±1–3 cm.