Dual Frequency Functionality Two whistle modes including an intermediate frequency with robust sound penetration and a frequency option above 120 dB to quickly transmit clear signals. Strobe and Bright Modes Advanced strobe function paired with an optimized light mode to draw attention during afterdark exploration. Battery Performance 500 mAh battery supports continuous operation for up to 400 miles, delivering durable performance and minimizing downtime. Suitable for Many Occasions Stereo sound design makes it ideal for outdoor exploration and disaster scenarios, ensuring reliable performance in different environments. Use scenarios Pet training in parks or at home: use the two frequency modes to issue recalls and commands, with the frequency option for distant signaling. Outdoor activities and night time exploration: utilize the bright light and strobe modes for visibility and safety after dark. Emergency or disaster response: reliable signaling and sound penetration to aid communication in challenging environments.