- Side charging port protected by a plug to shield the speaker from dust and damage - Specifically designed for authentic machine installations and precise hole positioning; the original protective cover must be removed during installation - Includes an adjustable shoulder strap with a length range of 70 to 140 cm for flexible carrying or mounting - Precise cutout design with hollow front and rear horn areas that do not affect sound quality Key benefits - Enhanced durability: side port protection helps extend speaker life in demanding environments - Accurate mounting: supports real machine installations and precise hole alignment, reducing setup errors - Flexible handling: adjustable strap provides comfortable carrying options and hands-free use - Sound integrity maintained: design features ensure front and rear horn modifications do not compromise audio performance Specifications and compatibility - Side charging port includes protective plug for durability - Strap length adjustable from 70 cm to 140 cm - Precise cutouts designed to fit with front and rear horn configurations without impacting sound Practical use scenarios - Factory or workshop installation: use in authentic machine setups that require precise hole positioning; remove the original protective cover during installation - On-site service and maintenance: protective port plug guards the speaker during transport and in dusty environments, while the adjustable strap enables easy carrying or hands-free operation - Field work and transport: strap length can be adjusted for comfortable wear or secure handling while moving between work sites or equipment Notes - This description preserves the original product functions and design intent without adding new features - No material specifications are provided; features focus on protection, mounting precision, adjustability, and audio integrity