November 2016 Seiko 5 Sports SSA331K1 "Pogue Open Heart" Automatic with Manual Winding Men's, Men's Fashion, Watches & Accessories, Watches on Carousell
Amazon.com: Customer reviews: Seiko 5 Sports 100M Retro Automatic Open Heart Watch Orange SSA331K1
My Eastern Watch Collection: SEIKO 5 Sports 100M Retro Automatic Open Heart SSA327K1 (similar to SSA329K1, SSA331K1, SSA333K1 & SSA335K1) – A Flexible Watch, A Review (plus Video)