This product is by far a lot better than the original that comes with the unit. It feels stronger and durable.

Works great for mounting a Quantum Q Flash to a soft-box. This allows the soft-box and the speed ring to be supported by the tripod and all the weight is not put on the Q Flash. The Q Flash is then attached to the ring and it does not seem to be a problem for the flash to sustain its own weight.

save some money, buy this brand. locking mech keeps cable in place all night. plenty of cord for one person or even a stand.

The length of this cord was increased which helps tremendously. Plus the locking mechanism on the unit means that it won't pull out when raising the camera above your head.

Fits the camera and lens mounts very tight with no play. Quality engineering. My only gripe in the pin used for removing the lens. Wish it was a button.

Other than that it beats the Hasselblad version I purchased and returned because of the sloppy craftsmanship.

I was looking for an external power pack for my Canon 580EX speedlight, something more environmentally friendly and the Lumedyne Supercycler match my needs. I bought the Medium battery to go along with the Supercycler. Sure, it costs more than the other external power packs but I can fire at least 800+ full power flashes. I don't recommend you do that, however, you'll be in the market for a new flash because it's easy to forget most Speedlight manufacturers tell you to shoot no more than 20 continuous full power flashes.

A must for Lightbox attachment

I was looking for a specific piece for my flash and couldn't find it. I asked a sales person for help and he pointed out this speed ring. WHAT A GREAT SUGGESTION! I can now use my current soft boxes on both my flash and studio stobes! Thank you.

This is a very nice upgrade form the original battery pack. The charge time is slower than the lithium battery.

Have the Lumedyne X and love it performs much like a mimi cycler for speedlights. Very small and compact and plugs directly into the flash so no cords to get tangled in. Performs as advertised doubles the life of the onboard batteries and cuts the recycle time in half. Not as fast as the big belt cyclers on full flash dumps but with higher ISO and TTL use you may not notice any difference. The X also maintains the flash capacitors at full charge for more consistent results. Normally the capacitors loose some of their charge before topping off again from the onboard batteries. Performs very different and better than the cheep Chinese extra batteries that only extend battery time but do nothing to speed up the recycle time of the flash. Save your money and get the Lumedyne X it's a much more useful and a real photographers tool. Once you get used to using the X or a Cycler and your flash fires every time at the correct intensity it's hard to settle for the basic performance and missed shots that the onboard batteries alone provide. I find that the Lumedyne X now lives in my camera bag as a light weight alternative to a cycler battery pack. It's great to have cycler performance at hand without the weight penalty of dragging it around if you don't need it or use it. Great for traveling less stuff, less weight! I'm a professional wedding photographer and found the Lumedyne X to be a great and useful addition to my bag. Very handy when dealing with two bodies, no tangled cycler cords. Also love the USB charger that lets me recharge in the car between locations. Lumedyne, is also a great company that really stands behind it's products that are made in the USA.