Clip ring is gold-plated stainless steel
M205 M215
Clip ring is chrome-plated stainless steel
M300 M400 M500 M600 M800
Clip ring is gold-plated brass
M405 M605 M805
Clip ring is palladium-plated brass
But I don't know the detail material of 700 710 900 910 series,
In 700/900 I saw the official PDF give clip a description "Brass"
However, in 710/910 I saw the official website said ring is described as "sterling silver". The clip, however, is written as "Germany silver(nickel?)" Is it Germany silver-plated? or solid Germany silver?
which made me very confused

So what kind of materials in 700 and 710 rings and clips are?
Thanks a lot!