gtr777Sony gtr777 Display demostración. 8.8K views · 4 years ago more. EAML electronics. 7.82K. Subscribe. 56. Share.HCD-GTR777, GTR888: E2, E51, AR 4-265-401-0[] Soldering irons using a temperature regulator should be set to HCD-GTR777, GTR888: MX 4-265-401-2[] about 350 °C. Caution: