The BNK BK8400 4-IN-1 is a versatile and professional wireless microphone system designed to cater to various vocal performances and activities. It offers 8 acoustic presets, including standard, boost, treble, pop, rock, classic, jazz, dance, and R&B, allowing users to tailor their sound to different occasions. The system utilizes UHF high band frequency, ensuring minimal interference and reliable performance. It comes in either a 2-channel or 4-channel configuration and operates within a carrier frequency range of 500-700MHz. The working range is approximately 50 meters under typical conditions, providing flexibility for various setups. The receiver and handheld microphones are made of durable metal and feature digital LCD displays showing frequency, battery level, and channel information. The system covers a long transmission range of over 100 meters (200 meters in open space), providing excellent coverage. The BNK BK8400 is a comprehensive wireless microphone set, ideal for professional vocal performances and events. It includes four handheld microphones, four separate XLR channels, a digital receiver, and a long-range capability of up to 150 meters.