DictaphoneExtended-LifePremium "EBS" Headset Compatible Universal Lightweight Bud Style For Transcriber Models 1709, 1720, 1730, 1740, 2710, 2720, 2730, 2740, 2750, 3740, 3750, 3710 and earlier models Lightweight Bud Style Mono Headset 5 Ft (15.240 DM) Black Cord 2 prong plug