Introduction:Luckin Coffee’s recently launched Guldul Series metal badges, paired with a “buy two, get one free” mystery box promotion, have sparked a collecting craze. However, due to the random distribution mechanism, many customers have gone to great lengths to complete their desired sets. Some coffee enthusiasts have even brought electronic scales to stores, using weighing techniques to precisely select target badges, with some even compiling detailed reference weights for each design. This article details the practical methods and precautions behind this weighing trend to help improve your collection efficiency.
Luckin Coffee recently introduced the Guldul Series metal badges and launched a mystery box campaign where purchasing two drinks earns you one badge. Featuring a design of a chubby little deer with a metallic finish, the badges quickly attracted numerous customers eager to buy them upon release.
However, the randomness of the mystery box system has posed challenges for many buyers. Each order only includes one randomly selected badge, with no way to know its contents beforehand. Some lucky customers may score their desired design in a single try, but many others find themselves repeatedly trying without success in completing their sets.
Some customers reported that even after buying two drinks at different stores on consecutive days, they still received duplicate badges. Others shared online that despite drinking Luckin products for three straight days, they never managed to get their favorite design. This uncertainty has left some avid collectors frustrated, with some going so far as to purchase over ten drinks or rely on colleagues to help open boxes in pursuit of a full set.
In response, some customers have turned to trading strategies, exchanging duplicate badges with friends or online community members to fill in missing designs. But for those unable to solve the issue through trades, a new method has emerged—bringing electronic scales to stores to weigh and select badges.
This technique, originating from the mystery box collector community, involves measuring the weight differences of each badge’s packaging to determine its contents. In practice, customers can ask store staff to help weigh unopened badge packages using an electronic scale after placing their order. By reading the precise weight displayed to one decimal place and comparing it with online reference data (for example, reports that five badge designs each weigh approximately X.X to X.X grams), they can identify and select their desired badge.
After being tested and proven effective by many, this method quickly spread within communities. Recently, more customers have been seen bringing electronic scales into Luckin stores, with some staff initially puzzled but later understanding—some even proactively helping with weigh-ins during slow periods. It is worth noting that this approach is best used during off-peak hours to avoid adding extra burden to the staff.
By combining practical tools with shared community insights, many customers have significantly improved their collection efficiency. For those aiming to systematically collect the Guldul Series badges, in addition to mastering weighing techniques, participating in online forums to exchange the latest weight data and real-world testing tips can further refine one’s collection strategy.
The above content is compiled by CoffeeHunters, a coffee news website.
