Acaia Pearl 2021 – pour-over coffee scale with flow rate display and USB-C
Buy the Acaia Pearl in Switzerland: brew scale with 0.1 g readout, real-time flow rate display, five brew modes and Bluetooth. In Bern and Zurich or online.
Acaia rebuilt the Pearl from the ground up for this generation: new weighing technology, a built-in flow rate display, USB-C charging and a brighter display. The Pearl is designed for the brew bar, with a 160 × 160 mm platform for a carafe, pour-over dripper or Aeropress. Coffee Coaching Club is the official Swiss importer of Acaia and carries the Pearl in White, Black and All Black.
What defines the Pearl 2021
Colour with depth
Alongside White and Black, the Pearl comes in Pitch Black, listed with us as "All Black": housing and surface black throughout.
Real-time flow rate display
An LED bar at the top of the display shows how fast you are pouring. According to the user manual, the scale runs from 0.5 g/s in the centre to 9.5 g/s at both ends. The first brighter LED pair marks 2.5 g/s as a guide value for an ideal flow, the second 6.5 g/s for faster pouring. Above 11.5 g/s, the outermost three LEDs light up brighter. That way you see while brewing whether your pace matches your recipe.
Faster and more responsive
With the new weighing technology, the reading stabilises faster and more accurately during brewing, according to Acaia. The weighing filter can be set to Fast, Normal or High: Fast reacts more quickly, High shows calmer values.
Easy to read in daylight
The brightness of the 8-digit LED display is adjustable in four levels. For bright light or outdoors, Acaia recommends level 4.
The details in everyday use
Five brew modes
Weighing only, dual display with timer and weight, pour-over with auto-start timer, portafilter mode with automatic taring, and beverage mode. The auto-start timer starts as soon as the scale detects the water flow from the kettle. Beverage mode guides you step by step through cup, filter, coffee dose and pour, and at the end shows brew time, water amount, beverage weight and the coffee-to-beverage ratio. Each mode can be switched on and off individually in the settings menu.
USB-C charging
According to Acaia, the lithium-ion battery lasts 30 to 40 hours, depending on brightness and settings; the user manual states around 30 hours. An empty battery is full after 1 to 2 hours. A charging protection prevents charging while the surface is still hot from brewing.
Built for daily use
According to Acaia, built to industrial standards with a modular design and technology from laboratory scales. Every scale is checked and calibrated by hand before shipping. You can recalibrate it yourself with a weight of 100, 500 or 1000 g.
Resolution and Bluetooth
Out of the box, the Pearl reads in 0.1 g steps up to 1000 g and in 0.5 g steps above that. In the High and Precise settings, it reads 0.1 g throughout, up to 2000 g. Via Bluetooth 5.0, the Pearl connects to the Acaia apps.
Care
Clean only with a soft cloth and warm water. Acaia advises against detergents and other chemicals.
At a glance
| Model |
Acaia Pearl (2021 generation), AP007 / AP008 / AP009 |
| Dimensions |
160 × 160 × 32 mm (W × L × H) |
| Weight |
500 g ± 5 g |
| Maximum capacity |
2000 g (display limit 2060 g) |
| Minimum weight |
0.1 g |
| Readability |
0.1 g (factory setting up to 1000 g, 0.5 g above; High/Precise setting 0.1 g throughout) |
| Repeatability |
0.1 g |
| Units |
g, oz |
| Flow rate display |
LED bar, 0.5 to 9.5 g/s, markers at 2.5 and 6.5 g/s |
| Brew modes |
Weighing only, dual display, pour-over auto-start timer, portafilter, beverage |
| Display |
8-digit LED display, brightness in 4 levels |
| Connectivity |
Bluetooth 5.0, Acaia apps |
| Battery |
Lithium-ion 3.7 V, 1100 mAh, 30 to 40 hours (Acaia), charging time 1 to 2 hours |
| Power supply |
5 V / 500 mA, USB-C |
| Material |
PC (polycarbonate) |
| Colours |
White (Classic White), Black (Classic Black), All Black (Pitch Black) |
| In the box |
Pearl, heat-resistant pad, USB-C cable, Acaia sticker set, warranty card |
Who the Pearl is made for
For anyone who brews filter coffee with a V60, Chemex, Kalita Wave, Aeropress or French press and wants to keep an eye on weight, time and pour speed. The large platform also holds carafes that do not fit on an espresso scale. If you mainly make espresso and are looking for a scale for the drip tray, Acaia offers the flat Lunar at 105 × 105 × 15 mm.
For anyone who wants a scale that is affordable and precise: the scales from Normcore, compact and reliable. If you want an app, flow rate display and Bluetooth: Acaia. Not sure which setup suits you? The advice tool helps you narrow it down, and a free consultation appointment is also possible.
What goes with it
Grinders: For anyone who wants to grind filter coffee affordably and precisely: the VS3 from Varia as an electric grinder, Comandante or Timemore as a hand grinder. If you want more room to play: the VS6 from Varia, the EG-1 from Weber Workshops or the Lagom grinders from Option-O.
Brewers and kettles: For anyone who wants pour-over at an affordable level: Hario V60 or Aeropress. If you want more: the BIRD from Weber Workshops. As a kettle, the AURA from Varia, with temperature control the AURA FLUX. Our opinion is one of many.
Delivery in 2 to 4 business days throughout Switzerland and to Liechtenstein, click & collect in Bern, Gerberngasse 44 and Zurich, Hagenholzstrasse 50b. Questions to [email protected] or by phone during business hours.
Frequently asked questions
What is the difference between the Acaia Pearl and the Acaia Lunar?
The Pearl measures 160 × 160 × 32 mm, weighs 500 g and is designed for filter coffee on the brew bar. The Lunar measures 105 × 105 × 15 mm and fits on the drip tray of an espresso machine. If you do both, you often use both scales.
How does the Pearl's flow rate display work?
An LED bar at the top of the display shows your pour speed in real time, from 0.5 g/s in the centre to 9.5 g/s at the ends. Brighter LEDs mark 2.5 g/s and 6.5 g/s as guide values. The display is available in dual display, pour-over auto-start timer and beverage modes and can be switched off in the settings.
Can I also use the Pearl for espresso?
Yes, portafilter mode tares the portafilter automatically and weighs the ground coffee. At 32 mm high, however, the Pearl does not fit under every espresso machine. The Lunar is intended for the drip tray.
How long does the Acaia Pearl's battery last?
According to Acaia, 30 to 40 hours of continuous use, depending on brightness and settings. It charges via USB-C, and an empty battery is full after 1 to 2 hours.
What is in the box with the Pearl?
The scale, a heat-resistant pad, a USB-C cable, an Acaia sticker set and a warranty card.
Can I see the Acaia Pearl before I buy it?
In our showrooms in Bern (Gerberngasse 44) and Zurich (Hagenholzstrasse 50b) we show a wide selection, and the display changes. Write to us at [email protected] before your visit, and we will check whether the Pearl is currently on site.
Tip from the roastery: For Aeropress and French press on the Pearl, we like to use Cozy Chocolate or Nutty Delight, both full-bodied and round. If you are looking for maximum body without acidity, reach for Very Nutty. For a fruity discovery in the V60, Wild Peach is a good fit. That is our recommendation, one of many.
