Please note: Compatible with Android phones only, not for iOS. Supports 5 frequencies: 125KHz, 13.56MHz, 250KHz, 375KHz, 500KHz. HID support is limited to ID frequency 125KHz; HID CLASS 13.56MHz is not supported. Supports reading and writing of IC 13.56MHz cards and ID 125KHz cards. Supports NFC mobile phone and smart bracelet simulation. Supports IC/ID card replication. Compatible with Android phones and computers running Windows 10-11 operating systems. Product appearance, color, and printed text may vary slightly between batches, but these differences do not affect functionality. Color: Black Material: Plastic Package Contents: 1 x Smart Card Reader 1 x Adapter (color and appearance may vary randomly; specific requests cannot be accommodated) 1 x Data Cable (color may vary randomly; specific color requests cannot be accommodated) The package includes only the items listed above; other products are not included. Note: Lighting effects and display settings may cause slight variations in the color representation between the image and the actual item. Measurement error allowance is +/- 1-3 cm.