Tie

The utility model provides a necktie which comprises a necktie ring, a necktie knot and a necktie tongue, an NFC chip is arranged on the necktie tongue, a pressure sensor and a contraction band are arranged on the necktie ring, a self-power-driven rotating shaft is arranged in the necktie, and the NFC chip is used for inputting and outputting information of an entity magnetic card. The pressure sensor on the necktie is used for detecting the pressure between the area occupied by the pressure sensor on the necktie ring and the human body, and the electric rotating shaft is used for controllingthe necktie ring to contract till the pressure value detected by the pressure sensor is a preset threshold value and controlling the necktie ring to be loosened. Therefore, the necktie provided by theutility model has the NFC function and the automatic contraction function, so that compared with an existing necktie, the functions are richer. 本申请提供了一种领带，包括：领带环、领带结和领带舌，在领带舌上设置NFC芯片，在领带环上设置压力传感器和收缩带，在领带中设置自电动转轴，NFC芯片用于录入并输出实