The product automatically detects when connected to the device to be tested. The up and down fluctuation switch enables the product to undergo inspection. New architecture with abundant materials. Compact structural design allows for ultimate compression of product volume, making it portable and user-friendly. The product is equipped with a built-in lithium battery, which can meet long-term testing needs. Supports Type-C for mobile phones, laptops, and other devices. Battery capacity: 400mAh Supported models: 8P interface detection. Type-C 24P interface detection. Tips: The product may be updated due to different batches. The actual product may have slight differences or color variations, which do not affect use. Color: Black Material: Plastic Package Contents: 1 x Mobile Phone Tail Insertion Detector Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement allowed error is +/- 1-3cm.