XTUGA S400 Professional 4-Channel UHF Wireless Microphone System with 4 Handheld Microphone 1. UHF Microphone System: Adopt UHF fixed high-frequency circuit design, easily avoid interference frequency. Provides clear, powerful, best authentic sound. 2. Long Distance: Open space line of sight up to 260ft. Upgrade the wireless signal acquisition, install 2 antennas on the back of the receiver, enhance the received signal, and ensure high-frequency stability and accuracy. 3. High Quality: Lightweight 4 handheld wireless microphones with individual volume control for each channel for precise sound balance. Brushed metal design receiver for optimal aesthetics and durable long life. 4. Wide Compatibility: Four XLR outputs and one 14 inch (6.35mm) mix output allow you to connect this versatile system to most amplifiersmixerspowered speakers on the market. Plug and play for easy setup. 5. Multiple Applications: 4 mics and 1 receiver, perfect for karaoke with friends and family, parties, church, DJ, weddings, business meetings, classroom activities, outdoor or indoor stage performances, etc. Specifications: Overall System 1. Number of channels: 4 channels 2. Carrier frequency range: 500-580MHz 3. Frequency response: 50Hz-15kHz 4. Open range: 80m (under typical conditions) Receiver 1. Sensitivity: Greater than -80dB 2. Audio Output: Balanced and Unbalanced 3. Power Requirement: DC 12V1000mA Transmitter 1. Cartridge: Dynamic 2. RF Output: Less than 10mW 3. Normal Deviation: 22kHz 4. Batteries: Two 1.5V AA Batteries (not included)