You are looking at a brand new(in the factory metal box) Portable Automatic Field Halogen refrigerant Leak Detector, with Air Pump etc. Model: HLD-9. Most Sensitive Detector in the World! FEATURES Our Newer Design and Technology in Halogen Detection! Microprocessor controlled circuit with Advanced Digital Signal Processing Detects ALL halogen refrigerants, CFCs, HCFCs, HFCs, and their blends(R500, R503, R22, R123, R124, , R502, R134a, R404a, R410A, R407, R125, AZ50, HP62, MP39, R403A, R12, R11, etc...) Audible alarm with variable frequency, and visual LED indication. Sensitivity adjustment, provides more control. On/Off switch control and reset button to any back ground halogen level. High Sensitivity: Less than 0.1 oz/year (or 3 grams/year) with R134a as the standard, the hardest refrigerant to detect(my other models, and the competitors models on the market, use R22 as sensitivity standards.) Come with a carrying case for protection! Cordless and portable. Powered by 2 AA-sized batteries(included). 14 inch (35.5cm) flexible probe (rubber lined) reach to almost any tight space. New design with slim body and a belt clip for easy carry around. One extra spare sensing tip included(stored in the battery compartment). Battery Life: Approximate. 20 hrs continuously.