Sirius MK9 DayBright - Ultimate Sports Engineering Ltd

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Technical Specifications:

LEDs 1 x White XPL2
IP Rating IP6
Max Lumens 850
Battery 5,200 mAh Li-Ion
Runtime 1.5 - 36 Hours
Charging Time 7 Hours
Weight 84g
Material Anodised 6063 Aluminium
Length 110mm
Head Diameter 28mm
In The Box Sirius MK9, QR Handlbar Mount, USB Charge Cable, QS Guide

Sirius MK9 DayBright


The perfect commuter light that crosses the boundaries of ‘to see’ and ‘be seen’ now at 850 lumens. For the rider who wants a minimalist light and a high output. An array of runtime options selected via the OMS can cater for different rides and conditions, whilst side illumination maintains safety throughout the urban jungle. Also featuring our DayBright pulse pattern, this slick unit lights up the streets both day and night.
Can be helmet mounted (helmet mount sold separately). Also available in a pack with TraceR Mk2 ReAKT for the ultimate set-up.

In the box:Sirius MK9, Handlebar Bracket, USB Charge Cable, QS Guide

In Stock

Quick Stats:

1.5 - 36
Hours Runtime
Lumens Measured Output
Grams Weight



Smart Port+ enables the charge port to accept auxiliary accessories such as rear lights, remote switches, Support Cells and use your light as a power bank to charge USB devices.


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.

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
EXPUG4.5 PDF Jul 20 2021


SRP £100
Output 850 lumens
Weight 84grams
Burntime Min 2 hrs Max 36 hrs
Battery Capacity 2900 mAh Li ion
Dimensions (mm) Length - 110, Head - 28, Back – 28


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