1.Function can customized 2.Customer logo can prited 3.Price is cheap 4.Quality ... are have more than 50 mcu(microcontroller ) brand supplier(origin factory) such as ATmel, PIC ,AVR ,Cypress,ABOV,etc2. ... are have more than 50 mcu(microcontroller ) brand supplier(origin factory) such as ATmel, PIC ,AVR ,Cypress,ABOV,etc2. ... mor than 5 years design and assembly experiance factory direct sell gps tracker