Seiko Y512-8039 Watch Guide The Seiko Y512-8039 is a watch model based on the Y512 movement.Parts List310T48ANS0crystal - crystal40M58NA1crown - crown40M58NS1crown - crownOther models with the same movementY512-0019Y512-8009Y512-8019Y512-8029Y512-8049Y512-8059