Features: 1. Line Tracking: Find the desired line quickly from many networks, phone lines. 2. Line Detection: Automatically and efficiently scan breakpoint such as wrong wiring, cable clutter, short circuit, disconnection, etc. 3. Using the earphone support that enables service technicians to work conveniently and comfortably in noisy environments. 4. Sensitive sensor, stable and reliable. 5. Provide better protection for better protection. 6. Used for communications network line engineering and daily maintenance, computer network line engineering, and other metal wire line engineering and maintenance work. Specifications: Condition: Brand new 100% optional Color: #1 (blue), #2 (light blue) Battery: 2 x 9V battery (sold separately) Weight: Approx. 14.1-14.3z Package List: 1 x Cable Emitter 1 x Cable Receiver 1 x RJ11 Cable 1 x RJ45 Cable 1 x Earphone 1 x Alligator Cable with Clamp 1 * Black bag