Note :
1. Because the color reflection in the mointor ,lighting ,background etc of each is different ,there maybe has a little difference in color ,please kindly understanding .
2. Please allow 1-3cm error due to manual measurement and different measurement methods for each person.
3. It is normal that the metal frame may be tighter or looser when used at its first time, Please simply adjust it by yourself. This is not quality problem concerned .