1. Automatic safety guarantee: The treadmill safety key stops the treadmill immediately when the key moves outside the detection range, helping prevent accidents and keep you safe during training. 2. Robust endurance: Made of solid ABS, this safety key is durable and reliable, capable of withstanding years of hard training sessions for dedicated runners. 3. Versatile functions: An indispensable accessory for any training routine. Its versatile functions and comfortable design enable both beginners and experienced runners to train with reduced risk of accidents or injuries. 4. Easy to use: The sturdy clip attaches easily to any part of your clothes, ensuring a quick and secure connection for a safe and worry-free workout experience. Use scenarios: - Home workouts: Attach to your clothing while using a personal treadmill to automatically stop if you move away from the machine, enhancing safety during solo sessions. - Interval and speed training: Rely on immediate stop capability to safely adjust speed and recover between intervals without disrupting your training flow. - Training for beginners: Provides an extra layer of safety so new runners can focus on form and pace while the treadmill automatically halts if the key is detached.