West End Watch West End Watch Co. SOWAR PRIMA Movement: Hand-winding Case size: Approximately 31.7mm (including crown) Dial color: Black x Brown Crystal: Acrylic (with minor scratches) Country of manufacture: Switzerland (SWISS MADE marking) Operation confirmed. I checked it for 12 hours, and I didn't notice any significant time deviation. However, the accuracy and running condition cannot be guaranteed. Due to its vintage nature, there are scratches and minor imperfections from aging. Recommended for those who can repair/maintain it or who understand vintage items. Returns and claims are not accepted after purchase. Instant purchase is OK.