Why choose gogarrett metal detectors? Garrett is a family business & build the best possible metal detectors, they also offer the best customer service because they are passionate about metal detectors & metal detecting.What is the warranty on my garrett detector? - Return shipping charges on all detectors more than 90 days old are the responsibility of the customer. All repairs are warranted for a period of 90 days. Please check the operation of your detector upon receipt. You can register your Garrett warranty now online.What is the phone number for the garrett electronics company? Garrett Electronics, Inc. 1881 W. State St. Garland, TX 75042. Telephone: (972) 494-6151. Fax: (972) 494-1881.Why do i need to return my metal detector to factory? Garrett Metal Detector products are of the highest quality and are manufactured to stringent standards. On occasion, however, it is necessary to return detectors to the factory for inspection, analysis and repair. In this instance we ask of you the following so we may serve you better and more rapidly.