The WM500 wireless speaker microphone is specifically designed for quick and easy access to PTT applications on your radio or smartphone, making it an essential tool for highly mobile, hands-on industries. With its slim design and long-lasting internal battery, lasting up to 25 hours, this RSM provides the simplicity and security needed to perform your job efficiently and effectively. Additionally, the innovative windporting technology eliminates wind-related background noise, ensuring clearer transmissions. The built-in 3.5mm earpiece jack adds even more flexibility, allowing for improved audio communication. Plus, with its IP67 rating for durability, this RSM can withstand immersion for at least 30 minutes and is completely dust-tight, ensuring reliable use in any environment.