DjuiinoStar High-end Fidget Spinner, Unique Dual Bearings Design, Precisely CNC Machined (Oxidation Treated Copper, Retro Feel), Premium EDC Toy DFS-04

I did not think that I am a fidget person. In hindsight though I do think people need to have something in their hand to help them cope with the struggles of life. The fact that you can hold a little kinetic energy in your hand is quite unique and to add to that it's almost a miracle that it can stay spinning. Mine spins for 4 minutes. It should spin 5 to 7 minutes, with the record held at longer times.The first one I had was defective, I returned it and got a replacement that works.The inter bearing and outer bearing work independently and one bearing can transfer energy to the other bearing, if stopped by human intervention. So yeah I'm hooked.Manufacturer's recommendation is that it NOT BE DROPPED as these bearings can be DAMAGED. I would agree. However you can easily buy replacement bearings from Amazon by referring to the bearing description that comes with the spinner. They even have a ceramic replacement bearing, that are claimed to be smoother with longer spend times. But they are at a considerable cost, some cost over $100.00, and people say there is no improvement in speed time.It is recommended that if you're not getting the performance you desire because of a sticking bearing, you are instructed to disassemble and reassemble, perhaps by swapping back and forth matching parts. That actually works. NEVER OVER TIGHTEN ANYTHING. Everything should just be just hand tight. That helps also. Special note, these bearings should never be lubricated, because attempting to do so will increase energy losses and decrease spin time. But if you feel the need to lubricate, it would have to be a very very very thin lubricant. Factory bearings come lubricated and are sealed, but if dirt gets in, rinse briefly in 99% alcohol dry and reassemble without applying lubricant.Best advice, contact the company if you don't get a spin time of at least 3 minutes. And I strongly advise care in disassembly or reassembly, mapping out the original layout of the parts. This is because, things don't always go together quite right if you swap matching parts, ONLY do so if you get a sticking bearing. I found it not easy. Best advice, don't mess with it, just ask for a return and replacement if dissatisfied.It is worth $100.00 and by far the best spinner out there. If you get a good one, you will know it because the bearings will interact equally with each other and make acceleration noises as energy is passed from one bearing to the next. It's a unique sound and it should sound smooth.

[See pictures attached to this review]This is a very high quality, well machined spinner. The dual-bearing system (one R188, one 6703 ring bearing) is ingenious and works beautifully. The outer thick body uses the R188, the inner cog uses a ring bearing (probably 6703). The two sections have a small amount of friction together, so if you spin one section alone, the other section will start moving too. When spun together in the same direction, they complement each other and add extra performance and feedback. I clocked table spin times consistently from 7-8 minutes, which is very good.Pros:- Excellent machining and finishing (stainless steel)- high quality shielded R188 bearing installed- high quality 6703 ring bearing installed- good weight at 111.7g- great size: 48mm wide, 17mm thick- dual-bearing system is innovative and works well- nice packaging: hard padded case, bearing tool, and several ball bearings that can be added to the spinner- multiple ways to spin and flickCons:- may be difficult to find a backup/replacement bearing for the 6703 ring bearing- bearing tool is proprietary and unique, if lost it could be harder to disassemble (but still possible)- tiny 3mm ball bearings are easy to lose!

It is really nice, and has high quality bearings, but im not sure the extra price, and quality feel is worth the extra price.

Spins freely and is well made. Third try it stayed spinning and didn’t stop till 4 minutes 29 seconds. Just wish it is a little bigger than what it is.

**Update 01-24-22* I received a reply from djuiinostar who sent a replacement spinner. The new spinner works exactly as intended. Both the inner ring and outer ring spin quick and smoothly. This is a very high quality spinner with a unique design and memorizing dual spinning feature. Highly recommended and a must have for anyone who is a fan of fidgets.**Original Review*The looks and the finish is great with no hot spots. The outer most ring spins really good and is well balanced. The center ring does not spin freely at all. It appears that the buttons rub on the inner wall causing it to not spin well or for very long. You can literally feel and hear the metal on metal rubbing. It's a shame because it is a great design but unfortunately doesn't work as intended.*I have contacted djuiinostar but have not yet received a response. I will update this review if/when I resolve this issue.

This spinner is very finely machined, and works beautifully. It's heavy and sturdy. I think the most fun is the independently rotating rings. I put the three larger ball bearings that came with it in the rings because I like the sound it makes. I also like spinning the two rings in a counter-rotating fashion, and watching the inner ring slow down, stop, and then rotate in the same direction as the outer ring.This spinner is very well made. I think it's worth the money for its uniqueness.