The B'Twin VIOO is a small and versatile light that is not only highly versatile, but also offers excellent value for money.
Front or back
Range of colours
Strap won't fit aero seatposts and bars
Why you can trust Cycling Weekly Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out more about how we test.
The days are getting longer, but for some lights are still a necessity. The B'Twin VIOO Front/Rear Bike Light is a lightweight light that won't break the bank (RRP of £8.50). The light is USB rechargeable meaning you can potentially charge it at work or home, ensuring your journey is always illuminated and removes the need to purchase batteries, resulting in a considerable economic saving.
>>> A buyers guide to bike lights
To demonstrate the product, B'Twin has produced the following video.
Pressing the single button allows you to switch between 'always on' and 'flashing' modes. In addition pressing the button switches between the red and white LEDs, meaning that the B'Twin VIOO can be used for front or rear lighting applications. It's a fun product too, with a large range of colour choices available
So how well does it work?
I have been really impressed with this light. With lights broadly falling into two categories – those that make you visible to others and those that enable you to see, this light being the former. The B'Twin VIOO can be clipped onto clothing, or strapped onto a seat post or bars. In practice both the clip and strap work well, although you might struggle if you have aero-shaped seatpost or bars.
I have found that the battery tends to last me around two weeks worth of commuting when used exclusively on the flashing mode (~7 hours), with charging being simple using the USB cable provided.
Operation of the button is simple and the small size and light weight make it ideal for sticking on the seat post of your road or time trial bike, without adding weight or compromising aerodynamics. Considering the low price, this is a very useful little product.
For more information head over to Decathlon.
Thank you for reading 10 articles this month* Join now for unlimited access
Enjoy your first month for just £1 / $1 / €1
*Read 5 free articles per month without a subscription
Join now for unlimited access
Try first month for just £1 / $1 / €1
Oliver Bridgewood - no, Doctor Oliver Bridgewood - is a PhD Chemist who discovered a love of cycling. He enjoys racing time trials, hill climbs, road races and criteriums. During his time at Cycling Weekly, he worked predominantly within the tech team, also utilising his science background to produce insightful fitness articles, before moving to an entirely video-focused role heading up the Cycling Weekly YouTube channel, where his feature-length documentary 'Project 49' was his crowning glory.
Netflix working on Mark Cavendish documentary
Film about the Manxman's life is already in production according to a report
By Vern Pitt • Published
Even Wout van Aert can lose his nerve: Five things we learned from the CX World Championships
Even with the absence of Tom Pidcock on the world stage, British cyclo-cross is in a good place
By Tom Thewlis • Published
Could Zwift subscription prices be set to rise?
Co-founder and CEO Eric Min has said the company is not currently profitable
By Tom Davidson • Published