B-STOCK. This is a product which has been returned by a customer within their 14-day money-back guarantee or opened by our team to test. Fully functional and come with a full warranty. --microphone: Type: Capacitive Directionality: Cardioid Output impedance: 2.2KΩ Sensitivity: -47dB ±3dB (0dB=1V/Pa at 1KHz) Cord length: 1m Sensitivity: 140dB SPL S/N ratio: 68dB Frequency response: 50Hz - 20KHz Three microphones included Microphone accessories included System: Transmission type: UHF Band: 655 - 680MHz (version ≤ 2021) 553 - 578MHz (F5 version) Frequencies: 2x100 Dynamics: >90dB Harmonics: 96dB Unbalanced output: 1x 6.35mm jack Balanced output: 1x XLR