When buying a laptop online in Dubai, consider key features like a processor (Intel i7/i9, AMD Ryzen), RAM (at least 8GB for smooth multitasking), and storage (SSD for faster performance). Look for a high-resolution display (Full HD or 4K) and a long battery life for better usability. Check the warranty, customer support, and international compatibility before purchasing. Also, compare prices from trusted online stores for the best deals.