A titanium measuring ring that measures distance and curves and is also an EDC toy: Nitecore Halo 10

You probably know Nitecore more as a flashlight and charger maker, but this one is a whole different league. Halo 10 is a coin-size titanium ring that serves at the same time as a curve measurer, a EDC fidget toy, and a neck pendant. One full rotation on the surface equals exactly ten centimeters, so you can measure even a route on a map or the circumference of an object that a ruler can’t handle. And since it weighs just 16 grams, you practically don’t feel it on your neck.

An unusual gadget and a toy in one

You can get the Nitecore Halo 10 titanium measuring ring from a trusted seller — directly in the official NITECORE Official Store on AliExpress with 98 % positive ratings. The item ships from a Chinese warehouse, which means delivery in about two weeks; shipping is free and in your cart customs duty around 3,7 € will be added to the price. Don’t forget to use the coupon from the price box, too.

ChinaPlanet deal

Nitecore Halo 10 titanium measuring ring

Titanium alloy 16 g

20-day delivery

Track pricePrice history

61,68 €

No coupon

Price history

6,67 €more expensive than the average price

Cheapest 44,91 €Most expensive 61,68 €

3 mo.6 mo.1 yearMax

GET DISCOUNT →

Are you shopping on AliExpress for the first time? See the guide!

Updated 22. 10. 2026 at 09:28

TIP20-day delivery via Aliexpress Standard Shipping

For this product, Aliexpress Standard Shipping is available with guaranteed delivery within 20 days. This is the most reliable shipping method and, in most cases, it’s handled by a courier company. The 20-day delivery we truly tested.

When you order from a Chinese warehouse, AliExpress adds a customs duty charge of approximately 3,70 € per order to your cart. When you receive the shipment, you won’t have to pay anything extra.

Track this product’s price

As soon as we post a new coupon, we’ll send you an email. You can unsubscribe from tracking anytime.

Confirm

Are you shopping on AliExpress for the first time?

The process is via the AliExpress mobile app, where most people shop. There are two key things: don’t use Buy now and enter the coupon only in the order summary, in the field Promo code. After you click Pay now, you won’t be able to add it.

1. Copy the code and click Use discountIn our article, copy the coupon and click the button GET DISCOUNT. The link will take you directly to the product in the AliExpress app.
2. Use Add to cart instead of Buy nowOn the product card, scroll down and tap Add to cart. Don’t use the Buy now button—you’ll skip the cart, and later you won’t have anywhere to enter the coupon. Before that, double-check the variant: the color, the version, and whether it ships from an EU warehouse.
3. Through the cart, go to CheckoutA pop-up will appear: Added to cart! — tap Check it out in it. If it disappeared, open the cart with the icon at the bottom right. In the cart, check the product and quantity, then click the red Checkout. Only the items marked with the red ring will be applied.
4. Enter your address and card, then look for Promo codeIn the order summary, first fill in the delivery address and payment card at the top. Below them there’s a line Promo code — expand it with the arrow on the right.

   

5. Paste the code and confirm ApplyIn the field Promo code paste the copied code and click the black Apply. The code is case-sensitive and must not contain spaces.

   

6. Check the savings and payIn the Summary expand the line Saved — you’ll see the applied coupon there as AliExpress coupons/codes. Only when Total is really lower, click Pay now.

   

Apply the discount already at the order summary. After you click Pay now, you can no longer add a coupon. If Apply shows an error, the code has either expired, doesn’t apply to your items, or the order doesn’t meet the minimum amount.

The Store Coupon also goes in the same field. — a coupon from the seller itself, which isn’t always available and changes from day to day. AliExpress coupons can’t be combined, so try both and go with the one that gives you more. Coins are added automatically.

View this post on Instagram

Aircraft-grade titanium and a bearing that make up half the fun

The body is CNC-machined from aircraft-grade titanium alloy, so it doesn’t corrode, doesn’t scratch, and feels like a premium item in your hand—not a souvenir. Inside there’s a quality ball bearing — it’s what makes the inner ring spin for a long time smoothly, without any rubbing.

That’s exactly what makes it an addictive fidget. The ring has a smooth, rounded surface that sits nicely between your fingers, and with every full rotation you can clearly hear a satisfying click. Nitecore itself calls it a “double delight” of touch and sound, and in reviews this is what comes up again and again—because as a fidget toy, it works brilliantly. With a weight of 16 grams and a diameter of 31.9 mm, you barely notice it during everyday carry.

One turn equals ten centimeters

Measuring is simple: numbers are engraved along the circumference, which you reset; then you hold the ring vertically at the start of the measured path and roll it along. With every full turn you hear a click, and one turn equals exactly 10 centimeters. You’ll then read the result either from the number of turns or directly from the scale.

It makes the most sense where a ruler fails—measuring curves, arcs, circumferences, and uneven surfaces, or measuring a route on a paper map. But let’s be honest: it’s not an accurate measuring tool. One reviewer says that with every bump the ring changes direction and they couldn’t measure precisely with it; another calls it a great tool for quick rough estimates of bigger objects and areas. So treat it as an estimation helper, not as a replacement for a tape measure.

A pendant you wear around your neck

In the box you also get a neck lanyard, so you can wear the Halo 10 as a pendant—and thanks to the matte titanium finish, it looks more like a minimalist piece of jewelry than a tool. It also wears just as well on your keys or in your pocket, where it’s always there when you need to measure something quickly.

Packaging is above standard for this type of product — a black box with magnetic opening, where there’s a ring and a lanyard. Packaging and material quality ratings are one hundred percent with buyers, which definitely isn’t the norm for small items from China.

One important warning: it contains magnets

In the product description, Nitecore directly states that the product contains magnets and that you should keep it away from pacemakers, defibrillators, and other medical devices to avoid affecting them. So if you have such a device—or someone in your household does—this neck pendant isn’t a good choice. And I wouldn’t give it to kids either, since they like to put things in their mouths.

It’s exactly the kind of small detail that makes sense as a gift for someone who loves quality and checks everything from every angle. The rating is 4.5 out of 5 from fourteen buyers, and the most commonly mentioned features are functionality, stylish design, and build quality. If you expect the precision of a workshop caliper, you’ll be disappointed; if you’re looking for a nice titanium EDC piece with a practical bonus, you’ll get exactly that.

Follow the China Planet website, subscribe to our monthly newsletter, and be sure to check out our Facebook page, the China Planet group, and join our Telegram, where we add the best offers and coupons from China every single day.