Ever had the sort of day where you just didn't understand where the time went? A vibrating ‘watch' that buzzes on your wrist every five minutes could help you out.

‘Durr' is the invention of Norwegian design duo Theo Tveterås and Lars Marcus Vedeler, who recently released the product under their studio Skrekstore. The design consists of a simple colorful disk on a leather strap, containing a mini circuit board and a vibration motor which 'buzzes' on the wearer's wrist at five-minute intervals.

The unisex bracelet device is operated by a replaceable battery which lasts around two months. The strap is made from laser-cut Norwegian vegetanned leather with a friction-fastener and the casing is hand-dyed on site.

The idea was to try to find a way to make time more tangible, and the pair put together the initial prototype in just half an hour. "When we got the idea initially, it was a test we did for fun, to see for ourselves how we experienced time in different situations," explains the duo via their blog.

The pair found that five minutes was the optimum length of time between vibrations, having experimented with between two to five minutes.

"One to three minutes was too frequent and a bit annoying, eight to 15 was too seldom as we couldn't relate to the last pulse," Vedeler explained to Relaxnews.

Vibrating alarms are already available as a function on traditional wrist watches from brands such as Casio, which debuted a new vibrating function for its G-shock model in May 2013, but the concept of a device designed to track the passage of time in such a unique and design-led fashion is relatively unusual.

The pair have currently been wearing their own devices for six months. "We've become experts at estimating how quickly time passes!" says Vedeler.

Durr bracelets come in a limited edition of five colors.