Exposure Sirius Mk7 Daybright

£100

The Mk7 Daybright is the latest edition of the long-standing and very well-received Sirius road and commuting light and it’s more feature packed than ever, with a max power of 750 lumens.

The quality of the Uk-made Cnc-machined metal body is immediately obvious. It has a long, sleek shape and it weighs 86g — lightest on test — so it certainly doesn’t feel bulky or cumbersome when mounted to a handlebar.

The Sirius comes with a plastic mount which attaches to the bars of the bike via a rubber strap. The light sits in the holder securely, although it can still slide up and down.

The Sirius is the most technologically advanced light here, offering a mindboggling array of modes. Details of the programs and run times are laser-etched onto the casing of the light; there are seven programs in total. Each program operates the light in a different way and you use the function button to select either high, medium or low within your chosen program. For example, program 1 has a two-hour burn time on ‘high’, four hours on ‘medium’ and 10 on ‘low’ while program 2 has three, 10 and 24-hour burn times. Program 4 allows you to toggle between two and four-hour burn time brightnesses.

It also has Exposure’s ‘Daybright’ technology that outputs a series of flashes and pulses designed to alert drivers in the daytime, which is accessible via program 1. Exposure’s ‘Fuel Gauge’ battery life indicator is, as you’d expect, also the most detailed of all the lights in this test.

Yes, it’s complicated to get your head around it and you could argue a bike light doesn’t need so many settings but the tutorial videos on the Exposure website are helpful, and once you’ve mastered how to set it you will be rewarded with a light you can accurately program for all your riding needs. www.exposurelights.com

9

Weight 86g