the 42 cm fan supports a wide range of media formats and can be updated easily, even by users with minimal technical knowledge. Most models allow content to be uploaded via SD card, USB drive, or WiFi, and support file types such as MP4, AVI, JPG, PNG, and more. Some advanced versions come with Android or iOS app support, allowing for content control directly from a smartphone or tablet. This is particularly helpful for businesses that want to change their promotions frequently—such as running different visuals during morning and evening shifts or updating the content for festive offers, flash sales, or time-limited discounts. Because the 42 cm fan is often used in small or mid-sized spaces, it doesn’t need extremely high-resolution videos—standard 720p or 1080p animations work well and look fantastic on this size. Many Delhi-based graphic designers and animation freelancers offer low-cost packages to create customized content for these fans, which makes it even easier for small businesses to get started with their own personalized holographic ads.

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