The Philips Series 3000 Rechargeable Beard Trimmer BT3239 is a high-performance grooming tool designed to deliver precise beard and stubble trimming with ease. The self-sharpening stainless steel blades are designed to stay sharp longer, providing a smooth and consistent trim every time.Key Features:Self-sharpening stainless steel blades20 length settings (0.5mm to 10mm)90 minutes of cordless use after 1-hour chargePrecision dial (zoom wheel) for adjustable trimming lengthDetachable, washable headBattery indicator shows when charging is neededErgonomic design for comfortable handlingHow to Use:Charge the Trimmer: Before using the trimmer for the first time, charge it fully for about 1 hour to get up to 90 minutes of cordless use. The battery indicator will show when its fully charged.Select Your Desired Length: Turn the zoom wheel on the handle to choose one of the 20 length settings. For stubble, choose a setting around 0.5mm to 1mm. For a longer beard, you can select up to 10mm. The