Seiko Caliber W650 No technical information found for this movement.Watches with the W650 movementW650-4000W650-4020W650-4040W650-4050W650-4060W650-4061W650-4062W650-406AW650-4070W650-4080W650-4090W650-4100W650-4110W650-4120W650-4130W650-4140W650-4150W650-4160W650-4170W650-4180W650-4200W650-4210W650-4220W650-4230W650-4240W650-4250W650-4260W650-4270W650-4280W650-4290W650-4330W650-4340W650-4350W650-4360W650-4370W650-4380W650-4410W650-4420W650-4A00