Broncolor Siros 400 L WiFi / RFS2 Outdoor Twin Head Kit 2
Product Code: 1598794

Broncolor Siros 400 L WiFi / RFS2 Outdoor Twin Head Kit 2

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Cordless, compact, fast and powerful, the new Siros 400 L is Broncolor's latest battery-powered flash head for professionals. Whether you're shooting in the studio or out in the field, the Siros L is the ideal start in professional, battery-powered photography, and perfect when available ambient light needs supplementing with flash. Made from aluminium, this stylish, simple to use head offers up to 440 flashes at full power per battery charge, colour constancy and both very fast, and also long, flash durations. All the basic functions of Siros L can be operated on your mobile via the BronControl App. This twin head kit is also available in 800 Joules.

Siros L | cordless, compact, fast and powerful

Elegance, power and simplicity. Sense the performance and robustness of Siros L from afar.

  • Latest lithium-ion battery technology
  • Enormous control range for flash energy - up to 9 f-stops
  • Remote control using "bronControl" app or RFS 2.1
  • Speed mode for fast flash times
  • Additional function for flash sequences
  • USB connection for software updates
  • For latest software updates visit
  • Easy-to-use rotary controller and simple operation

Please note: Stands are for illustrative purpose and not included within the kit.

Siros L is battery-powered

A single fully-charged lithium-ion battery stores enough energy for a Siros 400 L to flash more than 440 times - and it does that at maximum power! A miracle? No, quality!

Siros L is fast

In only 0.03 seconds your Siros L is ready again. The flash duration can last less than 1/9000 s (t 0.1) or 1/19'000 s (t 0.5). Truly miraculous times.

Siros L is simple

Very simple operation using the single rotary controller. Alternatively you can use the advanced, intuitive app. Either way using Siros L is fun.

Siros L is powerful

The high light output, up to 800 J, leaves no photographer standing in the dark - it can even challenge sunshine.

Siros L is LED

With its low power consumption, the 25 Watt LED module provides bright modelling light at a colour temperature of 3200 K. The light characteristics is absolutely comparable with the modelling light from a mains-operated Siros S.

Siros is Swiss

Do you appreciate quality? In Siros L you have Swiss precision and quality - inside and out. Be inspired!

Siros L is family

Proven meets innovation! The battery-powered Siros L, the Siros studio lights and Siros S are all available in both 400 and 800 Joule versions. Equipped with the Broncolor bayonet fitting, they are part of the best light system in the world.

Innovative Technologies | Made in Switzerland

Innovative technologies from the prize-winning Scoro and Move power packs have been adapted to the Siros L. These include:

Cut-off technology

Flash duration and light output are the two decisive factors in light control. A microprocessor in Siros L will calculate the shortest flash duration for a given energy setting. That is convenience!

Constant colour

The second generation of our patented ECTC (Enhanced Colour Temperature Control) technology, which adapts flash voltage and flash duration to each other, ensures a constant colour temperature over the entire output range. Reliability at the highest level.

Enormous range of settings

With Siros L you have a free choice of 9 f-stops to set the flash output you need, all the way to 2 Joules. Photography with maximum freedom.

Speed Mode

In Speed Mode fast charging and short flash times have absolute priority. In this case the calculation of constant colour temperature (ECTC) is suppressed. For quick results.

Lithium-ion battery

The latest lithium-ion technology in the batteries enables charging times never achieved before, and supplies energy for over 440 complete charges to full power - and all this from a weight of only 0.6 kg. It makes photography pure pleasure. Test the performance of our Siros L for yourself!


  • Flash energy: 400 J
  • Flash duration t 0.1 (t 0.5): min. energy 1/6'200 s (1/11'300 s) - max. energy:1/400 s (1/1'200 s)
  • Charging time: eco-mode: 0.04 - 1.9 s - normal: 0.03 - 1.2 s
  • Number of flashes per battery charge 440 at full energy
  • Colour temperature: 5'500 K
  • Modelling light Colour temperature: 25 W LED: 3'000 K
  • Flash release: Manual trigger button, photocell, sync cable, with integral Broncolor RFS 2.1
  • Remote control: "bronControl" app for mobile devices or RFS 2.1 transmitter
  • Ready display: Visual and acoustic (can be switched off)
  • Dimensions: 32 x 13 x 18 cm
  • Weight (without battery): 3.1 kg
  • Li-ion battery 28.8 V / 2.5 Ah
  • Operating temperature range -10° C to +60° C

What's in the box? (31.750.12)

  • 2 x Siros 400 L
  • 1 x Battery charger
  • 2 x Battery
  • 1 x Umbrella silver/black - 85 cm
  • 1 x Softbox 60 x 60
  • 1 x adapter ring
  • 1 x sync cable 5 m
  • 1 x Outdoor trolley backpack

Siros L - Battery Powered Studio Quality

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Product Specification

Colour Temperature [k] 5500k
Flash Power Range Up to 9 f-stops in 1/10 th. or full f-stop steps
Flash Tube Flash tube 400/800 for Siros L
Included Accessories 2 × Siros 400 L; 1 × battery charger; 2 × battery, 1 × umbrella silver/black - 85 cm; 1 × Softbox 60 × 60; 1 × adapter ring; 1 × sync cable 5 m, 1 × Outdoor trolley backpack
Modelling Lamp 25 Watt LED
Power Source Li-Ion Battery
Power [Ws|Joules] 400
Weight [kg] 3.10
Manufacturers Link Broncolor
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Loan Interest Bearing

Loan Interest Bearing

This option comprises term loan with a choice of repayment plans over:

  • 12 months
  • 24 months
  • 36 months

No deposit is required. However you can pay an optional deposit of not less than 10% of the total amount if you choose.

The balance of the finance agreement is payable directly to Barclays Partner Finance in equal monthly instalments by monthly direct debit. The direct debit payments will commence at the end of the first month following receipt of your goods. The interest rate charged is 14.9% APR. Late payment and early repayment penalties apply; full details of these will be provided in the loan agreement pack.

  12 Months 24 Months  36 Months 
Cash price  £4,296.00  £4,296.00  £4,296.00
Deposit £0.00 £0.00 £0.00
Loan Amount £4,296.00 £4,296.00 £4,296.00
Monthly Instalment 11 x £408.64 23 x £218.49 35 x £155.51
Final Instalment £408.67 £218.43 £155.45
Total Amount Repayable £4,903.71 £5,243.70 £5,598.30
Representative 14.9% APR 14.9% APR 14.9% APR

Are you eligible for finance?

In order to apply you must fulfill the following criteria:

  • Be at least 18 years old
  • Be in full-time work (16 hours or more a week), retired, or in receipt of disability allowance
  • Earn at least £6,000 a year
  • Have been a UK resident for three years or more
  • Have a mobile phone number
  • Have an email address
  • Have a UK bank account from which Direct Debits can be taken
  • Have no outstanding County Court Judgements (CCJs)

Note: All applicants will be subject to a credit reference check by the lender.

Credit is subject to application and status. Warehouse Express Ltd trading as Wex Photo Video act as credit broker and not the lender. Barclays Partner Finance act as the lender.

How does it work?

Where a qualifying product is added to your basket, the full value of your basket, including any accessories purchases, will be eligible for interest free credit. This is subject to the value of the additional products not exceeding the value of the qualifying product. No deposit is required and payments will be collected by direct debit in monthly instalments, the first instalment being collected 30 days after shipment of the product.

What will I receive from the finance provider (lender)?

Barclays Partner Finance will send a loan agreement pack approximately four weeks after delivery of the goods, confirming that the account has been activated and, from this point, it is possible to make repayments against the loan.

For further information on how our finance product work, see our Finance help section.

To apply for finance, follow these three easy steps

Add items to checkout

1. Add items to your basket, and click 'Checkout'.

Apply for Barclays finance

2. When selecting your Payment Option, choose ‘Apply for Finance’, and select your offer and terms.

Complete the online form

3. Complete the Barclays Online Application form. Make sure you have your bank details at hand.

Once your application has been accepted, usually within minutes, we will immediately dispatch your equipment.

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Product Code: 1598794-wex Manufacturers Part Number: 31.750.12