Can be used with or without the comb for a smooth and comfortable shave of 0.2mm. Suitable for all beard styles. It features a powerful lithium battery and a durable stainless steel blade for long-lasting sharpness that guarantees the blade's lifespan. The flexible blade comfortably follows the curves of the face for a smooth, quick, and irritation-free haircut. 3 combs: 1, 2, and 3mm. Cordless operation. Super-fast 2-hour charging for 90 minutes of use. With LED charge level indicator. 100% waterproof: for dry and wet use. Before using the device for the first time, it should be charged for 3 hours. For optimal battery life, the clipper should be fully discharged approximately every 6 months and then continuously charged for 3 hours.