Utilizes a professionally matched antenna design, achieving a card swipe distance superior to most other products on the market. Supports multiple NFC/RFID functions, including compatibility with for Classic, Ultralight, DESFire, Plus, 21x, EM410x, and T5577 card types. Simultaneously emulates up to 16 cards (8 card slots, each supporting 1 IC + 1 ID). Powered by the high-performance NRF52840 MCU (ARM - architecture, 1MB Flash + 256KB RAM). Supports Bluetooth 5.0 and Type-C connectivity. 90mAh battery life of up to 6 months (8 times daily use). Dual control buttons support card slot switching, device , UID cloning, and battery level display. Firmware supports sniffing, MFKEY32V2, , and more. Reset function: Pressing the A+B buttons quickly resets and restarts the device, quickly disconnects the device when connected via Bluetooth, and quickly disconnects the device or enters DFU mode when connected to a computer via Type-C. Sniffer (for Classic) MFKEY32V2 (for Classic) (for Classic) Nested (for Classic) StaticNested (for Classic) Color: Black Material: ABS Package Contents: 1 * Chameleon 3.0 Smart Card Emulator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.