Hotec is a US registered trademark. We are a professional manufacturer of high quality but affordable wireless audio and lighting gears. Our customers include teachers, podcasters, DJ, musicians, pastors, lecturers, audio engineers, gamers, videographers and Youtubers all over the world. We strive to make high-quality audio gear for our customers and provide fast, friendly and professional customer services through e-mails and phones. Please feel free to contact us if you need any assistance or have any questions about Hotec products. Customer support email: [email protected]