Swiss watch brand CVSTOS in collaboration with professional tennis player Karen Khachanov presented their CHALLANGE K. KHACHNOV in a limited edition of 100 pieces.

This watch features a high grade black carbon case in a 41mm x 53.7 size, with a 54 hour power reserve mechanical movement, and features a sapphire crystal and sapphire see through crystal case back.

For more information contact Exclusive Timepieces Luxury Watches in San Antonio, Texas. Authorized Retailer. 210.886.8004