Dual-Sided Headworn Microphone. Compact ear-hook design for a secure, ultra comfortable fit. Supplied in three ear-hook sizes for ideal fit. (S, M, L). Detachable boom can be worn on left or right & detached for replacement or servicing. O 10 mm uni-directional cardioid condenser microphone. Resistant to moisture, perspiration and salts. Fixed microphone boom. Soft yet flexible thin bends 120-degree and holder can be rotated for an ideal fit. Ideal for speech applications. Specs Capsule O 10 mm uni-directional cardioid condenser microphone Frequency Response 50 Hz - 18 kHz Sensitivity -46 dBV / Pa Max. SPL 142 dB (typical, 1%T.H.D.) Microphone Holder Can be installed on right or left side. Plug 4-pin mini XLR (screw-lock) Color Beige Cable Length 150 cm / 59.1" Weight Approx. 27 g / 1.0 oz