Support read and write storage data files. Compatible with multiple systems: Android, HarmonyOS, Windows 10/11. Simulation function: only one IC card position can be used for simulation and detection. IC card reading and writing: supports 13.56 MHz. ID card reading and writing: supports 13.56 MHz. Bluetooth connection: use Bluetooth function to connect. Mini program function: supports mini program function, more convenient to use. Data transmission: USB Type-C. Battery specification: 3.7V/140mAh. Charging power: 5V/80mA. Notes: 1. Battery life: This device uses high-quality 3.7V/140mAh battery. It can be used for about 120 minutes after a full charge. 2. Charging suggestions: Use a 5V constant voltage charger or a 5V constant voltage power bank, or charge via computer USB or mobile phone OTG. If using a fast charging charger or power bank, use a standard original one. Using non-standard fast charging devices may cause high voltage damage to the device. 3. Charging time: Recommended charging time within 30 minutes. When fully charged or out of power, the 7th and 8th indicator lights will flash simultaneously. The device will automatically shut down when out of power. Please unplug the power supply promptly after charging is complete. Charging prompts can be ignored during card reader mode operation. 4. Storage: Do not store with conductive materials such as metal, as there may be a risk of short circuit. Color: Black Material: Plastic Package Contents: 1 x NFC tool 1 x Type-C adapter 1 x data cable (The colors of the adapter and data cable are random and cannot be specified) Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3 cm.