BOOST R - DayBright - Ultimate Sports Engineering Ltd

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Technical Specifications:

LEDs 1 x Red XPE-R
IP Rating IP65
Max Lumens 80
Battery 1400 mAh Li-Ion
Runtime 6 - 48 Hours
Charging Time 3
Weight 45g
Material Anodised 6063 Aluminium
Head Diameter
In The Box Boost-R Daybright, Seatpost Mount, Micro USB Charge Cable, QS Guide

BOOST R - DayBright


The BOOST R, taking the massively prevalent form of the Trace R and designing a rear light with twice the burn times with just a 10-gram increase in weight. This rear end guardian comes with a high-capacity Lithium-Ion battery it produces both a powerful output and long burntimes. Featuring DayBright pulse pattern to cut through the distractions of busy roads. With long burn times the BOOST R is the perfect partner for your weekly commute or packing adventure, both day and night.

In Stock

Quick Stats:

6 - 48 (FL)
Hours Runtime
Lumens Measured Output
Grams Weight



Various programs in the lights can easily be selected to offer a choice of run times and modes so you can find the right one for your ride, be it an all-night adventure or an intense blast.


Patented circuitry within the light will reduce power to the LEDs, if they go beyond the optimum temperature, keeping the light as efficient as possible to maximise output and battery capacity. Once the light has cooled, the power is automatically restored.

Fuel Gauge Fuel Gauge

Using a traffic light system remaining runtime is easily monitored at a glance so you’re not caught out. The colour feedback is also used for mode selection, before defaulting back to runtime.

Daybright Daybright

Bespoke pulse pattern designed for daylight use which is more conspicuous than a regular pulse and visible over a kilometre away, even in the brightest conditions. DayBright mode will you noticed. Be Seen be Safe



Name File Type Date Modified
EXPUG1.5 PDF Feb 16 2023


SRP £80
Output 80 lumens
Weight 45grams
Burntime Min 6 hrs Max 48 hrs (FL)
Battery Capacity 1400 mAh Li ion
Dimensions (mm) Length - 66, Head - 28, Back – 22


Andrew Sinnott

The claimed output of some lights doesn’t seem to transfer to visibility on the road. There are cheaper lights claiming hundreds of lumens, but I would recommend this light over any other. I bought 2 and gave one to my son, so I have ridden behind (sometimes quite a way behind) his light and it has excellent visibility. Equally important is the knowledge that it is working, and this is a quality product that I can have faith in. I use it in pulse mode on the brightest setting and get at least 12 hours run time. It is expensive when comparing other lights if you just look at claimed output, but this light is worth the asking price.

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