Which of the following features is important for the swift-lock anchor?

The key feature of the swift-lock anchor that stands out is the presence of two eyelets. This design allows for secure and stable connections, enhancing the functionality and safety of the anchor when it is used for various applications. The two eyelets enable adjustments and facilitate a multi-point attachment system, which can be crucial in ensuring the anchor performs optimally under load. This structural design is essential for ensuring that the anchor can handle the expected demands, particularly in environments where reliability is paramount.

Other options, while they may represent useful features in other contexts, do not pertain directly to the swift-lock anchor's efficacy. For instance, Bluetooth connectivity could enhance certain products but doesn't relate to the core functionalities expected from an anchor's physical design. BurstDR capability is a characteristic often linked with data recovery systems, which does not apply to anchoring technology. Lastly, while a rechargeable battery is common in many modern devices, it is not relevant to the operation or purpose of an anchor, which fundamentally relies on physical structure rather than electronic features.