This slim smart tracker fits in your wallet and saved my gear more than once

The UGREEN FineTrack Slim Smart Finder is an Apple Find My-compatible smart tracker designed to mimic the look and style of a standard credit card. The idea is that it can sit in your wallet alongside all your other cards, and if your wallet is stolen, it’s unlikely anyone rifling through it would realise what it is. It has no obvious markings beyond a small contact point in one corner and a small hole for a lanyard.

Likewise, if you slip it into a pocket in your camera backpack, it won’t take up noticeable space. Because it’s so small and lightweight, it won’t add any bulk to your kit, making it even more versatile.

The tracker has been designed primarily to sit in a wallet, but due to its shape and size, it’s also ideal for slipping into a camera bag—hence its inclusion in our reviews here.

Other than that, there’s little more to the device—it’s simply another option for a smart tracker to help you keep tabs on your gear.

When it comes to size and weight, the UGREEN FineTrack Slim Smart Finder is essentially the same size as any standard credit card, so it will fit into your wallet alongside the rest of your cards. If you’re interested in the exact dimensions, it’s approximately 84mm x 53mm x 1.7mm, and it weighs 12g.

Despite its incredibly slim profile, it features an internal battery that powers the tracker for up to 12 months. It comes with a charging cable with proprietary contact points, but it also supports magnetic charging—so if you have a magnetic charger, just pop this on top, and it’ll begin charging, which is another great feature.

Unlike some other smart trackers, it is fully waterproof, with an IP68 rating. So, if it gets soaked, it will still continue to work without issue.

As with the larger UGREEN tracker, it also features the same beep function. If you’re searching for your bag or wallet and can’t locate it, you can trigger a beep at 80 dB. While not overly loud, it should be enough to locate most items at home or in quiet locations. In a busy café, however—as I tested—the beep might get drowned out by background noise, though if you listen carefully, you can still hear it.

Like the other UGREEN smart tracker, it’s very simple and designed to look like an ordinary credit card with discreet functionality.

The key feature is its integration with the Apple Find My network, and it’s fully Apple-certified. One of the standout aspects is how slim it is—just 1.7mm thick—so it can sit in your wallet with the rest of your cards without issue.

Another excellent feature is that it’s wirelessly chargeable. While it comes with a cable, since it only needs charging once a year, you’re likely to misplace it. Thankfully, it’s compatible with magnetic chargers, so it’s easy to top up when needed. I often placed it on top of my Bluetti power station’s magnetic charger while working on-site—just to give it a boost. That said, my review period was only one month, so the tracker still had plenty of charge.

As with other trackers, there’s an internal speaker for audio alerts. The 80dB beep is reasonably loud for such a small device, but again, it is not easily heard in noisy environments like busy cafés.

There’s also the ability to share the tracker’s location with multiple devices. So, if you’re working as part of a team, placing one card in each kit bag and sharing its tracking info with up to five devices makes coordination much easier. Each Find My app can support up to 32 smart connections, which is enough to keep most of your equipment monitored under one account.

One final point worth mentioning: there is a power button. However, UGREEN has designed it so that you must hold the button firmly for at least two seconds to avoid accidental power-offs, which is useful since it’ll likely be stored with other cards in your wallet.

As soon as I removed the UGREEN FineTrack Slim Smart Finder from the packaging, I was struck by just how small and lightweight it is. It really is the size and almost the weight of a credit card. Side by side, it’s about double the thickness, but the length and width are identical.

Getting started was very easy. I connected the magnetic charging cable to a USB adapter and started charging the tracker. Once fully charged, I left it overnight. In the morning, it was ready to go.

To pair it with my Find My app, I pressed and held the power button on the card for a couple of seconds. The tracker was then ready to pair. I went to “Other Devices” in the app, and the FineTrack Slim Smart Finder appeared.

I was also testing another tracker at the time, so it made sense to get both set up. Later, in a café, a friend took my wallet and walked off. Within seconds, my phone alerted me that the tracker was out of range, so I knew someone had moved the wallet. I popped into the app and could instantly see the location—even though my friend didn’t have an iPhone, the tracker still used the Find My network via nearby devices. In this case, tourists around Salisbury Cathedral made tracking easy, and I pinpointed the wallet at the Bell Tower Café.

During testing, the FineTrack Slim performed exactly how a smart tracker should. As long as there are people nearby using iPhones, location tracking is reliable and effective.

One question I had was what happens in a remote area without network coverage. I tested this in the New Forest. I placed the tracker in a tree with no mobile signal. When I checked Find My, it showed the last known location where the tracker and I were together. Since there was no signal at the drop point, real-time tracking didn’t work—but I could still trigger the audio alert as long as I was in Bluetooth range.

I retraced my steps, hitting “Play Sound” in the app every so often until I heard the faint beep in the tree. While this isn’t ideal, it at least gives you a method to locate gear dropped outside network coverage.

Smart trackers are extremely useful. Most of the time, we know exactly where our kit is, but there are those occasions when something gets left behind—or worse, stolen. Having a UGREEN smart tracker in your bag or wallet increases the chances of tracking it down significantly.

Sometimes you’ll leave your bag somewhere safe but forget where. Was it on the bus? At the last location? A smart tracker will show you the last known location where you and the item were together, giving you peace of mind until you can return and retrieve it.

In the worst-case scenario, if your bag or wallet is stolen, you have a fighting chance of recovering it. The fact that this tracker looks just like a credit card adds to the appeal. It’s discreet, and if a thief does steal your bag, they’re unlikely to remove it, thinking it’s just another card.

At the end of the test, I was highly impressed with the UGREEN FineTrack Slim Smart Finder. While slightly cheaper than the Apple Tag, the credit card form factor makes it even easier to attach to equipment, and I really liked that.

I’m a big fan of the Apple Tag, but unless I’m attaching it to a bag, I find it tricky to mount on certain items. UGREEN’s two designs—one for a keyring and one for a wallet—offer real flexibility. If you’re looking for a decent, reliable smart tracker, I’d highly recommend the UGREEN FineTrack Slim Tracker.