100% brand new and high quality Features: Quickly and easily check network cables. This compact device can be used to test the network. Telephone (RJ-45 RJ-11 RJ12) and most types of computer cables. Easy to use, mini shape, convenient to take wherever you go, test status display and power indicator. Power supply: DC 9V battery (not included). Protective power switch for low power consumption. Specifications: Material: Plastic Size: approx. 8x5cm/3.15x1.97in Fit for: Rj45 Rj11 Network Cable Power Source: DC9V Battery Required (not included) Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1PC x Mini Network Cable Tester