40mm china aviation chronograph seagull movement 1963 mechanical watch for men 40mm st1901 sapphire 38mm watches mens 2021 pilot, Slivery;brown

this product is a with excellent value for money, please kindly confirm. 1. please allow slight difference due to manual measurement and a little color variation for different display setting. 2. please carefully check size chart . thank you for your understanding. we are committed to make every customer satisfaction with my product ,while satisfaction with the service we provide ,we focus on reputation with products and good service,exchange for your trust and look forward to maintaining long-term cooperationyou having a happy shopping here.