Features: brand new and Your fingerprint is the for key for you to log in quickly by touching our reader. No need to remember username and password high-quality materials, and safe, and can be used for a long for time. Fine workmanship, not easy to wear, very practical. Although the design is simple, it is very practical to use. Specifications: ABS Size Approx.2.7x4.5cm 1.06x0.59inches Color Black Package Includes: 1x USB Fingerprint Recognition Login Device note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Your fingerprint is the for key for you to log in quickly by touching our reader. No need to remember username and password. high-quality materials, and safe, and can be used for a long for time. Fine workmanship, not easy to wear, very practical. Although the design is simple, it is very practical to use.