Acaia Umbra Duo – display-free precision scale with a large work surface
Two vessels sit side by side on a calm, display-free surface. No screen blinking at you – the number appears exactly where you need it: on your paired Acaia scale or on your phone. Dosing, brewing, weighing all happen right there, and the counter stays clear.
A scale that steps back, so the coffee can take center stage.
What makes the Umbra Duo different
The Umbra Duo is a display-free Acaia scale with a larger work surface than the classic Umbra. That means room for more than just a single cup – bigger brews or several vessels at once fit here too. It measures to 0.1 g accuracy, and in the finer mode to 0.01 g – precise enough to repeat recipes reliably.
Instead of its own screen, it pairs with other Acaia scales via Magic Relay and shares readings in real time; you read them on a paired Acaia scale or in the Acaia app. That keeps the surface calm, lowers power draw, and extends battery life. It's built from anodized aluminum and water-resistant materials, so splashes and brew steam are no issue day to day. Advanced measuring modes like weight, timer, and flow trigger help you keep track of your brew. Whether this approach speaks to you is your call – it's just our view, one of many.
At a glance
| Accuracy |
0,1 g / 0,01 g |
| Display |
display-free – read via a paired Acaia scale or the Acaia app |
| Connectivity |
Magic Relay, real-time data transfer to other Acaia scales |
| Measuring modes |
Weight, timer, flow trigger |
| Work surface |
larger than the classic Umbra, for multiple vessels |
| Material |
anodized aluminum, water-resistant |
Who the Umbra Duo is for
The Umbra Duo is for anyone who likes to approach their brewing process systematically and make recipes reproducible – whether for espresso, pour over, or batch brew. If you weigh several vessels at once or want to pair multiple Acaia scales, this is the platform for you. Every coffee path is welcome here.
Pairs well with
More Acaia scales like the Pearl or the Lunar are waiting in our Acaia Collection. For espresso, it's worth a look at our espresso machines, and for filter brewing, check the drippers and accessories in our Hario Collection. Not sure what fits your setup? Our advisory tool can help.
Frequently asked questions about the Acaia Umbra Duo
How accurate is the Umbra Duo?
It measures to 0.1 g accuracy, and in the finer mode to 0.01 g. That's precise enough to dose and repeat recipes reliably.
Does the Umbra Duo have a display?
No, it's display-free — you read the values via a paired Acaia scale or the Acaia app. That keeps the surface calm and saves battery.
Which Acaia scales can the Umbra Duo pair with?
Via Magic Relay, it connects with other Acaia scales like the Pearl or the Lunar and shares readings in real time.
What's the larger work surface useful for?
It offers room for single cups as well as larger brews or several vessels at once – handy for espresso, pour over, and batch brew.
Roastery tip
An accurate scale helps you get closer to the result you're after – but we see weighing as a learning process, not a guarantee. No shot is exactly like yesterday's, because the bean, the humidity, and the person change every day; that's exactly what makes it beautiful. For espresso, we like to reach for Cozy Chocolate and Nutty Delight – full-bodied, sweet, dense. If you like it full and round without any acidity, stick with Very Nutty; for a fruity experience, Wild Peach goes into the grinder. That's our recommendation, one of many, and whichever bean tastes right to you is the right one.
