Coles Electroacoustics 4104

Controls: None standard; optional press-to-talk switch available

I/O: 1x XLR 3-pin output (pin 1 screen, pin 2 positive, pin 3 negative), 300 ohm balanced

Notable use: BBC design; noise-cancelling commentator/reporter mic used by BBC, IBA, CBS and ABC for sports commentary and field reporting in high-noise environments; also listed as '4104B' by some US dealers (manufacturer part number is 4104)

Notes: FLAG: this is the lip-ribbon / noise-cancelling commentator mic called out in the brief. Rated for wind speeds up to 20 mph (32 km/h) without notable quality loss, and up to 40+ mph (64+ km/h) with an optional windshield. Better than 30 dB average discrimination between voice and background noise; distortion <1% at 120 dB SPL. Weight 10 oz (283 g); dimensions 8" x 2 1/4" x 3" (200 x 57 x 76 mm). Brass perforated case with brown enamel paint and brown PVC handle; comes with foam-lined rigid case; replacement washable hygiene screens sold separately (pack of 10). Some retailers (e.g., Markertek) list this under SKU '4104B' with manufacturer number 4104 -- treated here as the same current model, not a separate line item. No USD or GBP price published on manufacturer site; price_usd left blank per golden rules.