The GratKit 3D Filament Dryer Box Firefly V2.0 is a versatile and efficient tool for any 3D printing enthusiast. With its Tuya App compatibility, users can remotely control and monitor the drying process, ensuring optimal conditions for various filaments like PLA, PETG, TPU, ABS, and Nylon.

One of the standout features is its air heating circulation system, which includes a built-in fan and temperature sensors on both the top and bottom. This ensures even drying and prevents common issues such as clogging and stringing caused by moisture. The ability to reach temperatures up to 70℃ makes it suitable for a wide range of filaments.

Users have praised the quiet operation of the 5015 fan and the convenience of the hanging spool design, which reduces friction and prevents spool melting at high temperatures. The RGB LED lights add a fun touch to your 3D printing setup.

However, some users noted that the exterior plastic feels flimsy and that the manual could be more helpful. Despite these minor drawbacks, the overall performance and functionality of the GratKit Firefly V2.0 make it a valuable addition to any 3D printing workspace.

In conclusion, if you're looking for a reliable filament dryer that combines smart technology with effective drying capabilities, the GratKit Firefly V2.0 is an excellent choice.