We will be closed 19th June 2021 - 28th June 2021

CustomDUO Shop

Flippin Tec Modules


LED upgrades for Underwater Kinetics and Princeton Tec 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.



Flippin Tec PT Tec40 module

LED upgrade module (T-350) for Princeton Tec Tec40 diving light. 130 lumen, diffuse spot LED. Limited stock, while available.



Flippin Tec PT Attitude module

LED upgrade module (PTA) for Princeton Tec Attitude. 90 lumen, spot LED. Limited stock, while available.




Out of stock

Flippin Tec T-350

CustomDUO Shop 

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. Customduo also accept UK cheque or bank transfer.  International orders welcome. We are currently shipping internationally (outside UK) at no extra postal charge. For more details please see delivery


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

Underwater Kinetics mini Q40 O rings

4 pack of O rings for UK mini q40 / UK 4AA, and derivatives.  



UK mini Q40 O rings

Underwater Kinetics replacement bezel 14814

Replacement bezel 14814 for Underwater kinetics UK 4AA / mini Q40 torch




Out of stock

Flippin Tec Q-350
Flippin Tec SL-700