Retractable design Our boat safety lanyard features a retractable key cord and a swiveling carabiner to prevent tangling while you enjoy the water. This design helps keep you secure without getting in the way during movement on deck. Wide compatibility and quick access Provides an emergency stop function for motorboats, cruisers, and speedboats. The 7-button design fits 7 different motor key sets, ensuring easy access and compatibility across common engine configurations. Durable materials for long life Constructed with a robust waxed rope and PU material for reliable performance in harsh marine environments. End-to-end stainless steel buckles offer corrosion resistance and durability for repeated use. Easy to operate If the lead line is pulled, the ignition system shuts off and the boat slows to a stop, providing a straightforward safety mechanism. Connect the appropriate key to the engine control unit and latch the hook to the variomatic. Use scenarios - Recreational boating on lakes or rivers: easy access to engine control and secure operation while moving around the boat. - High speed or fun runs on motorboats: immediate engine shut-off on line pull to prevent accidents. - Boats with multiple engines or keys (rental or charter): 7-button design allows quick matching to the correct motor key set, reducing setup time. This description maintains the original product focus on retractable design, wide compatibility, durable materials, and simple operation, while presenting clear benefits and practical scenarios in customer-friendly language.