Excellent sound quality: This wireless microphone features a professional moving coil heart-shaped pickup pattern and full digital processing chip for clear, smooth audio with minimal feedback and interference. Background noise is effectively eliminated. Stable frequency: Equipped with professional automatic frequency technology, this microphone provides stable sound transmission with up to 48 selectable channels. Digital ID code pilot technology prevents frequency conflicts. Open area working range reaches 164 feet without obstructions. Easy to use: Compatible with devices featuring MIC INPUT (6.35mm or 3.5mm jacks). Includes a 6.35mm to 3.5mm adapter for flexible connectivity. Wide application: Suitable for speakers, singing machines, voice amplifiers and PA systems. Ideal for karaoke parties, weddings, churches, conferences and presentations. Note: Requires MIC INPUT jack - not compatible with Bluetooth speakers, phones or PCs. Battery and display: Each microphone requires 2 AA batteries (not included). Receiver features built-in 1200mAh rechargeable battery (6-7 hours runtime). LED display shows battery level and signal strength. Durable construction: All-metal microphone with steel mesh grid provides impact and corrosion resistance. Condition: New. Origin: China. Note: Computer connection requires separate sound card.