Fusion X4 310 Lumen Dive Torch


The latest innovation of our Luxeon underwater torch, incorporating cutting-edge technology in conjunction with our legendary build quality.

The Fusion X4 Torch has new redesigned LED, light reflector and switch asembly, for the ultimate package of superb performance with outstanding durability, Super-Luxeon Pure White Light technology for fantastic, focused beam and colour temperature of 5300K.


  • Super high 310 lumens output
  • Natural daylight colour temp 5300K
  • 8.5hr total continuous burn time
  • New optically enhanced reflector
  • Philips lumileds T 3w luxeon LED
  • Depth tested to 95 metres
  • Double O-ring seals
  • External magnetic on/off switch
  • 4 x AA Alkaline Batteries (Supplied)

Delivery, Returns & Instore Collection

When will I receive my order?

International Delivery Times

Monday – Friday 3 – 5 Working Days

UK Mainland Delivery Times

Monday – Friday before 2pm Next Working Day
Monday – Friday after 2pm 2 Working Days
Saturday & Sunday 2 Working Days

UK Extended Areas Delivery Times

Monday – Sunday 3 – 5 Working Days

Please note delivery times may be extended during busy periods.

EU Areas

Please note that due to changes by HMRC, orders being shipped to EU countries will not be shipped on the same day as they are invoiced. EU Orders will now be shipped on the next working day. This only applies to E.U. orders. Domestic and Worldwide shipments remain the same.

Collect In Store?

When you go to the online checkout, you can opt to collect your items in store. We'll let you know when your order is ready for you to collect. Your order will normally be ready to collect the next working day.

Returns, refunds or exchanges?

You can return any item within 28 days of receipt for a refund, provided the item is unused, in its original packaging and in 'as new' condition.

Items will be refunded in full (less postage) if received within 28 days from the date of despatch.


We aim to deal with all returns and exchanges on the day they arrive, however please allow longer during peak periods.

You can return the item(s) by dropping them off in store or by returning the item(s) by post. We do not insist on a specific courier service for the return, so please use the most economical or appropriate method for returning the item(s).

Northern Diver (Int) Ltd
Appley Lane North
Appley Bridge

If an item becomes faulty after a period of time then please contact customer services (01257 254 444 or info@ndiver.com) prior to returning the item. We will either repair or replace the item at our discretion.

Tell Us What You Think

Customer Reviews

4.2 out of 5 Stars (5 reviews)

Write a Review

This isn't just a review about a torch...

By John Gordon on 08 Nov. 2012

...but more about Northern Diver the company. I bought a Fusion X2 a few years ago, and it packed up just before our recent diving holiday. I replaced it with a new X3, and after my holiday contacted Northern Diver. I could not find either receipt or warranty, but ND were brilliant, and replaced the switch without question. Thanks Cara and ND team! Superb customer service. And a great torch too.

ultra bright

By Barry Francis on 15 Sep. 2011

Having owned loads of dive gear by ND, I wanted a good back up torch for UK diving and as a main when on holiday. This light is good enough as a main light source for here in the UK, let alone abroad. It has a good strong beam for those dark places you love to look into when on a wreck..... another great ND product!

Excellent Service

By Stephen Thomson on 10 Feb. 2016

Bought this torch some years ago and gave great service until the last time I went diving and while checking out my equipment noticed it was not working. Contacted Cara on service support who could not have been more helpful. Sent the torch back for repair and received it back in less than 48 hours. Amazing service! Couldn't ask for more. Many thanks!

Great main or back-up torch - very impressed

By Tim Prince on 07 Mar. 2017

I bought this torch as a 'back-up' light for a trip to Chuuk Lagoon in December16/January17. I was so impressed with its performance that I ended up using it as my main light for several very deep penetration dives. It is just the right size for a BCD pocket or for a wrist lanyard, and is not heavy, but reassuringly 'chunky'. Very pleased with this purchase and would recommend - its rubber protective casing makes it ideal for a clumsy wreck diver!

my 5th fusion X4 torch

By kes on 16 May. 2021

Have bought 5 of these in the past and will buy again, here is an honest review of my experience, good and bad. Have used a pair of them head mounted on hundreds of dives, including trimix depths. Great torch underwater, sufficient light once your eyes accustom to the dark. Really long burn time without much drop of in brightness. Seams to run well on alkaline (duracell) or the rechargeable batteries that stay charged for a long time when not in use. Simple on/off switch, no messing with press for high/low/flash/sos etc Rectangular in cross section, so great for head mounting or any other mounting as it won't rotate, so the switch is always where you expect to find it with a gloved hand.. Light is white with a narrow beam, so penetrates well when there is poor visibility, with little back scatter. BUT some faults you need to be aware off. When replacing batteries it is easy to cross the fine threads that hold the torch together, One thread is plastic and one aluminium, so the plastic thread can be damaged, take care. 4 torches failed so far. The magnetic switches all failed after about 4 years, is that reasonable? Long before they fail the magnetic switch fails to return to its rest position. If you move it back then forth once you can switch it on/off. Rinsing it well after every dive and lubricating with WD40 helps, but they still fail. Suspect the magnet is not adequately coated to protect it from rust and/or not made from the best of materials so loses its magnetic strength leading to a full failure. Hope Northern diver improve the weakness, the last update was good, it gave more output without and I did not notice any reduction in burn time. However it still seams to have the thread and switch problem. (This review written May 2021)


Trade Customers

Northern Diver offers trade accounts to commercial organisations and to those who work in or around water. Please click here to register your details and find out if you qualify. Once your trade account has been confirmed you can view all trade prices and shop easily online when logged into your account. Please note when you are not logged in to your trade account retail prices are shown. If you have any queries please do not hesitate to contact us. Tel: +44 (0) 1257 25 44 44.