Manual staplers offer portability and ease of use, requiring no external power source. They typically feature a sheet capacity between 15 and 60 sheets, with 20 sheets being common. Key features include spring-loaded inner channels to prevent jams, ergonomic handgrips for comfort, and sometimes a staple reload indicator or a built-in staple remover. Some models are designed for heavy-duty applications, offering larger capacity and more durable construction.