Act as a product designer with 5+ years of experience in consumer electronics. Design a sleek, modern portable fan that allows users to customize airflow intensity, direction, and oscillation patterns. The fan should feature [MATERIAL: lightweight aluminum or durable ABS plastic], [POWER SOURCE: USB-C rechargeable battery or AC adapter], and [CONTROLS: touch-sensitive panel or mobile app integration]. Include innovative details like [AIRFLOW MODES: breeze, turbo, or sleep mode], [NOISE LEVEL: under 30 dB for quiet operation], and [PORTABILITY: foldable handle or compact size for travel]. Ensure the design is aesthetically pleasing and functional for both home and office use.