DictaphoneExtended-LifePremium "EBS" Headset Compatible Universal Aluminum hinged-stetho type For Transcriber Models 1709, 1720, 1730, 1740, 2710, 2720, 2730, 2740, 2750, 3740, 3750, 3710 and earlier models Aluminum Hinged-Stetho Type Mono Headset 5 Ft (15.240 DM) Black Cord 2 prong plug