Only a true coffee connoisseur understands the importance of a weighing scale, as this small device can transform casual brewing into a precise, repeatable craft you can rely on over time. A case in point is coffee tech startup BOOKOO, which gained attention for its Themis Mini Scale and has now introduced Themis Ultra, a larger, fully waterproof, Bluetooth-connected model designed to solve brewing challenges. You simply place it beneath your machine and it remains durable even when surrounded by steam and daily drips.
This coffee scale addresses a major issue faced by many scales – the risk of water damage. With a full IP67 rating, it can be completely submerged in water without damage, making it one of the most durable coffee scales on the market. This rare level of waterproof protection is ideal for those seeking maximum protection against spills and moisture during brewing.
Unlike traditional designs, BOOKOO’s engineering team has developed a specialized electronics chamber that isolates core components like the battery and PCBA from external exposure. Additionally, the load cell is coated with a corrosion-resistant layer to protect against long-term damage from moisture, steam, and coffee acids.
Another key improvement in the new coffee scale is its extended battery life. It is equipped with a 2000mAh lithium-polymer battery that can last for months on a single charge. It works for up to 72 hours of continuous use or about six months with daily brewing. When the battery runs low, simply recharge it using the USB-C cable, which takes only a couple of hours. There are charging indicators on both the scale and the app to keep you informed at all times.
Using the coffee scale is simple: you have to long press the right button to shift between different modes. The display shows up to three metrics at once, including timer, flow, and weight and you can choose from four modes: Weight, Flow, Ratio, and Auto, depending on your brewing needs. With a capacity ranging from 0.1g to 2000g and 0.1g readability, it accurately measures even the smallest coffee beans.
Themis Ultra coffee scale also takes care of stability and responsiveness. It provides fast, stable, and highly accurate weight readings by eliminating fluctuations and environmental noise. This enables precise real-time tracking of small changes during brewing for better control and consistency.
Designed to fit most setups with ease, Themis Ultra is compact enough for espresso trays yet practical for daily use. Measuring just 112mm (4.41”) wide and 18mm (0.71”) thick, it fits neatly on most drip trays without crowding your portafilter or cups. Its 127mm (5”) width also accommodates two cups side-by-side under a double spout or carafes, something many espresso-sized scales lack.
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Built with a see-through, reinforced, heat-resistant PC shell and an internal steel plate, Themis Ultra is as durable, functional as well as good-looking. It also offers Bluetooth connectivity for mobile app integration and wireless firmware updates. Additional features include a 10-minute auto-off timer and compatibility with Decent Espresso and Gaggiuino machines.
Whether you are a hobbyist or a professional barista, Themis Ultra is a powerful accessory that can enhance your brewing experience. It offers live weight tracking, visual flow graphs, brew logging, and recipe ghosting to support all types of coffee-making tasks.
If you are looking to upgrade your current coffee scale, Themis Ultra is a great choice given its advanced features and durable design. It is currently available for pre-order on Kickstarter, with early bird pledges starting at $82 that offer a 39 percent discount for backers.
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