Once in a while you see an invention where you think 'how has no one made one of these before?' The IIumenox rear bike brake light appears to be just that.

Take a look at the featured video that demonstrates the product in action. By linking the braking cable action, the light turns on when the brake is applied.

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The product appears to be very small, light and simple in design. The makers claim that the light can be installed without using a tool and is compatible with V-brakes, side pull callipers and direct mount brakes. The light is turned on by a clever, but simple steel leaf spring switch.

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Crucially, it is claimed that the Nano bike brake light does not affect braking performance in any way. A second video displays the product with more detail.

The product features a high brightness LED and is rain proof. By using a CR1025 coin battery, the makers claim a constant run time of 50 hours, which we think is rather impressive.

With diminutive dimensions of 31mm by 16mm by 30mm, the light has a claimed weight of only 5.5g with battery. We think bike brake light is a really cool invention that would be useful while commuting and group riding. What do you think? Let us know in the comments.

For more information, head over to Iluminox’s website