1) Model design, good finish, and high quality 2) Lifetime: 10 years 3) Compatible ... back case.. * Inside Materials: Silver contact, and rigid copper used. * Good contact, effectively preventing the oxidation ,feel smooth. * Easy installation and ... round pin socket, switched 15A 3 round pin socket/with neon , 2 pin socket, 3 square pin socket, TV/Satellite socket, TEL socket, LAN socket, 200W / 360W ...