Handheld models are small, portable devices designed for easy use and convenience. They often feature a compact design, allowing users to operate them with one hand. These models can be found in various categories, including electronics, toys, and tools, making them versatile for different applications. Common examples of handheld models include smartphones, handheld gaming consoles, and portable scanners. They are popular for their accessibility and functionality, enabling users to perform tasks on the go. Handheld models often incorporate user-friendly interfaces, making them suitable for people of all ages and skill levels.