Seiko Uhrglas 220W01AL – Tokelaito Mineralglas – für Seiko Chorus Week – NOS Quarz – Housing: Stainless steel –

– Housing: Stainless steel – Glass: Sapphire glass – Band: integrated stainless steel band – Case back: transparent (viewing case)

Instead of following short-term trends

between the manufacturers of the King and Grand Seiko lines – led to a remarkable surge in innovation

– Sapphire crystal

ISO 6425 certified (DNV) – Domed sapphire box crystal with internal anti-reflective coating – Mantramatic MM01 based on Sellita SW200-1

Seiko Uhrglas 220W01AL – Tokelaito Mineralglas – für Seiko Chorus Week – NOS Quarz – Housing: Stainless steel –Original Seiko Tokelaito () watch crystal with reference 220W01AL , from unused old stock (NOS). Tokelaito is Seiko's historical name for a hardened mineral glass that was used in numerous models of the 1960s and 1970s. This glass was demonstrably used in the rare Seiko Chorus Week series an elegant vintage collection for which original parts are now almost impossible to find. The WP marking on the packaging stands for the waterproof version ("Water