Gadgets
Aura Aspen Bilderrahmen im Test: tolles Bild, aber Cloud-Zwang
A 249 euro digital picture frame with free cloud storage. Which ports are missing?
Test protocol · verified, not just copied
I don't trust manufacturers until I've measured it myself.
I'm Holger Becker — I test 3D printers, power stations, laser engravers, robotic mowers, and charging tech the way they're actually used: with my own measurements, stress tests, and an honest look at what manufacturers promise.
Selected reviews
My work at Smartzone.de
This selection was published on Smartzone.de,
where I write regularly as a gadget tester
(see all 51 reviews).
Independent HB Check reviews will follow here over time. I've also been writing
occasionally for
ANKER.blog
since March 2023 — see all 45 posts.
Gadgets
Gadgets
RingConn Gen 2 und Gen 3 im Test: Wie gut sind die smarten Gesundheitsringe?
Two smart rings compared, only one tracks blood pressure trends. Is the extra cost worth it?
Gadgets
iFLYTEK AINOTE 2 im Test: Kann das KI-Tablet meinen Notizblock ersetzen?
Can a 669 euro E-Ink tablet replace my notepad? The writing feel won me over, but one thing makes me skeptical.
Smart home
Sonoff TRVZB im Test: Leises Zigbee-Thermostat für rund 20€
A Zigbee thermostat for around 20 euros. How quiet is it and how accurately does it regulate?
Gadgets
UREVO CyberMega im Test: smartes Laufband für zu Hause
A home treadmill with up to 12 percent incline. How loud does it get at high speed?
Projector
Aurzen EAZZE E1 im Test: kompakter Mini-Beamer mit Netflix
A 150 euro mini projector with Netflix. How bright is it compared to the manufacturer claim?