We will be closed 15th Aug 2022 - 25th Aug 2022

We are shipping to the EU as normal.  We generally post the next working day. However, delivery within the EU is slow at the moment!  Sorry, this is beyond our control, and thanks for your patience. Import charges may apply to orders delivered outside of the UK.  


No deliveries to Russia


The Online Shop allows payment with most debit and credit cards, without the requirement for a Paypal account. Add product to cart and option is offered at checkout. 


International orders welcome. For more details please see Delivery 

CustomDUO Shop

Flippin Tec Modules


LED upgrades for Underwater Kinetics dive lights

Flippin Tec mini Q40 module

LED upgrade module (Q-350) for Underwater Kinetics UK mini Q40 diving light, ever popular with cavers and divers alike. 170 lumen, spot LED. Read fitting information before purchasing and attempting this conversion, as these are not idiot proof !!



Flippin Tec UK-SL4 module

LED upgrade module (SL-700) for Underwater Kinetics UK SL4 diving light, popular with cave divers. For underwater use. 310 lumen. Read fitting information before purchasing and attempting this conversion.



CustomDUO Shop 


Please note that we are a small manufacturing business. Officially we work Mon-Thurs (excluding public holidays). If closed for holidays etc we will provide notice on CustomDUO calendar.

We aim to despatch CustomDUO stock products within two working days, and generally the next working day. We make every effort to keep our on-line stock availability right up to date (and generally don't get caught napping). When placing an order, please ensure that your delivery details are correct, and also that your email address is current, so that we can keep you informed on order progress.


Before purchasing any Customduo product please ensure that you have read and accept the terms

Flippin Tec Q-350
Flippin Tec SL-700