Elegantly enhance your watch with the Montblanc TWIN Bluetooth Smart Watch Strap. This strap allows you to add digital technology to your favorite mechanical watch. The smart module works like a mechanical clasp that fastens your watch, just like regular clasps. By using the TWIN, you can receive phone notifications and track daily activities. You can also use it to pay at contactless terminals from Mastercard and Visa, turning your watch into a digital wallet. Using the app, you can digitalize up to five credit cards. Data encryption and security sensors protect your personal information at all times. In addition, the comfortable watch strap is easily adjustable to fit any wrist size. It also comes in two sizes, making it easy to mount on most watches for men.