The Braun BT7540 from the Series 7 is a comprehensive beard trimmer designed for those who want precise control over their facial hair style. It features the Lifetime Ultra Sharp ProBlade made of stainless steel, which works alongside AutoSense technology to automatically adjust the motor's power based on the density of your beard, ensuring a smooth cut without pulling. You can easily dial in your desired length using the PrecisionWheel, which offers 40 different settings from 0.5 mm up to 20 mm in 0.5 mm increments. To keep your chosen length from accidentally shifting, the PrecisionLock feature secures the setting in place. The deep blue device is 100% waterproof, allowing you to rinse it under the tap for quick cleaning. This set provides a full barbering experience with 10 tools, including a PrecisionShave head for clean edges, a ProDetail trimmer for fine work, and a beard stencil to help you shape your look. The Li-Ion battery delivers 120 minutes of cordless runtime after a 1.5-hour charge, and the included travel case and charging stand make it convenient for both home use and trips.