This 40mm sapphire glass and stainless steel watch case with a chapter ring is designed for NH35 NH36 movements, specifically compatible with Seiko watches. Made from 316L stainless steel, this case has a water resistance of 5ATM and is suitable for a dial size of 28.5mm. The sleek silver colour and compact size make it a stylish and reliable choice for watch enthusiasts looking to upgrade their timepieces.