Sennheiser DW BS basestation with DW10 single-sided headset Basestation connects to a PC via USB cable (USB micro, provided but is a bit tatty; if I find a spare I'll put in the box). Headset is 1-sided and the band is adjustable and goes over head and the mic boom raises/lowers as required. Never used the dialler functionality as never used it, and there is no external power supply (it came with originally, but got lost when moving offices, but I had never used that: preferring to just always power from my PC dock via usb) Headset rechargeable battery was replaced about 6 months ago, and can maybe get 4-5hrs of calls out of a charge.
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