Sony has launched a different take on the smartwatch, with all the technology embedded in a band that users can attach to their favourite analogue face.

The Wena watch strap upgrades any traditional watch with fitness tracking, contactless payments and phone notifications.

All of the technology has been carefully designed to fit within the gentle curve of the watch clasp, including a small OLED screen where notifications are displayed.

Two strap designs are available: the Wena Wrist Pro, a classic metal link style in either silver or black, or the Wena Wrist Active, which has a silicone strap made for fitness.

The Active model comes with additional GPS and heart tracking. It also has a “quick-release system” that allows the watch face to be easily removed during exercise, making the accessory lighter and giving it the appearance of a Fitbit-style fitness tracker.

Both band styles are 20 millimetres wide and attach to any watch that takes an 18-, 20- or 22-millimetre lug, although Sony also offers the option of five of its own watch face designs.

Wena — which stands for “wear electronics naturally” — came out of Sony’s Seed Acceleration programme, where employees are supported to develop ideas outside of the Japanese electronics company’s existing product categories.

Sony has sold the watch strap in Japan since 2015, but is now launching the product internationally.

While smartwatches such as the Apple Watch have become firmly established as a wearable product category in the last few years, few companies have attempted the smart watch band.

The band could appeal to consumers who like the look, simplicity or longevity of a classic watch.