Smart boxers: what do they measure, how do they work, and what are they for? Test!

Who wouldn’t want smart boxers that wash themselves when needed, cool you down in summer, and keep you warm in winter? Well, that’s not what we’re talking about today. Whoops.

Muse One Ring – The Wait Is Over: Unboxing and First Test

For many, the Muse One Ring was already written off. Every now and then I spotted a cry of “scam!” in the communities, but otherwise it was almost forgotten. And yet — here it is. The question is: how does it look, what can it already (not) do, and what remains a promise?

Ultrahuman sent me a surprise. Is it the Ultrahuman Gen 2?

It is not, but...

🔥 Best Smart Ring Deals for Prime Day 2025 (U.S. Only)

Amazon Prime Day is here – and this year brings serious discounts on top smart rings. Whether you’re tracking sleep, recovery, or just want powerful health insights on your finger, here are the hottest deals (U.S. only).

⏰ Garmin finally wakes you up smartly! Does it work?

Garmin Fenix 8 finally brings smart wake-up! I compare the new Smart Wake feature with the Oura ring, EEG, and older Garmin models. Does it really help reduce sleep inertia? I also revisit a 2018 email where I dreamed of this very feature.

Whoop 5.0 / MG – The Good, the Bad, and the Ugly (First Impressions)

Whoop 5.0 is here—smaller (?), more powerful (?), and up to 14 days of battery life. This article offers a fair and honest breakdown of what works, what the company got wrong, and where the new model still overpromises and underdelivers. Step tracking, comparison with the Whoop 4.0 included.

Ultrahuman Sprint '25 – A Solid Load of New Features for Your Smart Ring 💍

During its Summer Release Sprint '25, Ultrahuman unveiled a range of new features, improvements, and products within its wearable ecosystem. According to the official blog, it was a week of intense cross-team collaboration focused on “redefining what’s possible.” So—did they manage to redefine it?

🔔 15% Off Ultrahuman Ring AIR – Anniversary Sale (Ends June 30)

To celebrate the 2-year anniversary of the Ultrahuman Ring, there’s now a 15% discount available until June 30, 2025.

🏠 Ultrahuman Home – The Ideal Companion for the 💍 Ultrahuman Air Smart Ring? [Review]

Ultrahuman Home is a smart device designed to monitor indoor environmental quality. It measures CO₂, dust, noise, and light, and works in synergy with the Ultrahuman Air ring. In this article, I share my testing experience and real-life examples of using it at home.

Best Smart Ring: The Sick Test 🤒

Which smart ring detects illness the best? During a week with the flu, I tracked how different rings (Oura, RingConn, Ultrahuman…) and other wearables (Whoop, Garmin Fenix 8, Apple Watch Ultra, Elonga) responded. Which devices gave an early warning — and which ones failed?

Whoop 5.0 Disappointment: No Free Upgrade and Controversial New Membership Model

Whoop 5.0 Is Here – Smaller, More Powerful, and With Up to 14 Days of Battery Life. But the New Membership Model Divides the Community. What does the MG model with an ECG sensor bring to the table? And why are some users disappointed by the broken promise of a “free upgrade”?

🏠 I Unboxed the Ultrahuman Home – First Impressions of This Smart Environmental Tracker!

The official launch is set for May 6th, but we’re already putting it through its paces. The Home is part of the Ultrahuman ecosystem alongside the Ultrahuman Air smart ring — together, they provide valuable insights into how your environment affects your sleep, recovery, and overall well-being.