Blackburn Mars 4.0 rear light review

Great rear flasher with tool free mount

Our rating 
4.5 out of 5 star rating 4.5
GBP £19.99 RRP | USD $39.70
Blackburn Mars 4.0

Our review

Well-sealed, easy to use & highly visible. Highly recommended.
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With a main one watt LED and two smaller side facing LEDs the Mars 4.0 is one of the best sealed rear lights. 


A tool-free removable rear plate covers the batteries, but beyond the battery plate everything is sealed. The power button is part of the secondary seal behind the internal battery tray. 


A lifetime warranty and excellent performance are matched by a run time of over 150 hours, and there’s an array of top quality tool-free mounting options. 

Product Specifications


Name Mars 4.0
Brand Blackburn Design

Manufacturer's Description This is one light that has to be seen to be believed.
Features Very powerful and compact design. Combines a 1 watt ultra bright rear facing red LED with 2 amber side LEDs. Light focusing optic lens for maximum visibility. This is one light that has to be seen to be believed. No tool battery installation. Powered by 2 AAA batteries (supplied). Versatile mounting system which includes a belt clip, countless bike mounted options and even comes with a rack adaptor. 50 hour runtime (steady) & 150 hour (flashing). Blackburn lifetime warranty.
No Of Batteries Required 2
Type of Battery Required AAA Alkaline