This self-stirring mug is built for modern convenience, combining a magnetic stir mechanism with a USB rechargeable battery, eliminating the need for disposable batteries. It includes two magnetic stir bars that attach securely to the cup’s base, ensuring consistent blending performance across different drinks. The stirring function is activated via a button on the handle and runs for 30 seconds per cycle, enough for most mixing needs without splashing.

Constructed from food-grade ABS plastic with a 304 stainless steel interior, the mug maintains heat better than a typical cup, although it’s not actively heated. The double-wall design helps keep beverages warm while protecting hands from heat. Cleaning is simple - rinse with water (not dishwasher safe) and detach the stir bar as needed.

A standout feature is the magnetic charging system, offering safer, more reliable power-up without exposed ports. The charge holds for dozens of uses, making it well-suited to daily routines. However, the lid doesn’t seal tightly, leading to occasional leaks during transport. 

The mug’s base is too wide for some cup holders, and durability can be a concern, with reports of performance declining after several months of use.