Seiko V739-OB20 Watch Guide The Seiko V739-OB20 is a watch model based on the V739 movement.Parts List290A11JNO2crystalOther models with the same movementV739-0A10V739-0A20V739-0A30V739-0A40V739-0A49V739-0A50V739-0A59V739-0A60V739-0A70V739-0A80V739-0A89V739-0A90V739-0A99V739-0B09V739-0B19V739-0B20V739-0B30V739-0B31V739-0B40V739-0B4AV739-5A00V739-5A10V739-5A20V739-5A30V739-5A39V739-5A50V739-5A60V739-5A69V739-5A70V739-5A80V739-5A89V739-5A90V739-5A99V739-5B09V739-5B19V739-5B20V739-5B30V739-5B40V739-5B50V739-5B60V739-5B70V739-5B80V739-5B90V739-X002V739-X006V739-X010