DEVICE COMPATIBILITY: Specifically designed for the rugged Sonim XP5s, XP8, XP5plus, and XP10, ensuring flawless performance with these industry-leading devices. SUPERIOR NOISE REDUCTION: Equipped with a true noise-reducing microphone and a convenient side-bar PTT button, this headset guarantees clear communication in loud environments. Includes ear tips and a sturdy steel clothing clip for secure, all-day use. RUGGED KEVLAR-REINFORCED CABLE: Built to withstand the toughest conditions, the Kevlar-reinforced cable provides a firm, sure grip that resists snags, cuts, and wear for long-lasting reliability. CRYSTAL CLEAR COMMUNICATION: This PTT earpiece delivers loud, clear voice transmission with its noise-reducing microphone and easily accessible push-to-talk button. Easy to clean and share, it's a top choice for security, surveillance, and frontline workers seeking reliable communication in demanding environments. SPEAKER SPECIFICATION: Sensitivity @ 1k Hz (dB SPL) - 108, DC Resistance (Ohmns) -92, Impedance @ 500 Hz (Ohms) -200 MICROPHONE SPECIFICATION: Sensitivity Range- -36±2dB RL =2.2KΩ Vs=3.0v(DC), Frequency- 50-16000Hz, Operation Voltage Range- 1.0V-10V (DC), Max Sound Pressure Level- 115dB S.P.L. From a complete line of 2-way radios and accessories, to a full suite of P.O.C. Push-To-Talk custom accessories and charger solutions, we have the solution you need. With in-house firmware and electrical engineers, we smoothly integrate HW and SW into rugged, professional products. Tenure is an average of 15+ years, with several key people being on board for 18-20 years, making our process experienced, agile and easy to work with. From our brands to yours, Klein Electronics is your partner of choice. We are your full service company from OEM and ODM Design, Development, and Distribution.