This SEIKO 5 SNKK87 is an automatic self-winding mechanical watch featuring a 38mm diameter stainless stain case modified with (i) Swiss BGW9 Deep Diver Dial, (ii) Swiss BGW9 Polished Silver Snowflake Hands, (iIi) Flat Sapphire Crystal and (iv) an iconic 5-stripe black & grey Nato strap.