Sennheiser DW BS Phone - EU 504446 Base Station and DW 30 HS Headset | eBay
Amazon.com: Replacement Battery for SENNHEISER D10, DW Office, DW Office ML, DW Pro 1, DW Pro 2, DW Pro 30, DW Pro1, DW Pro2, DW Pro2 ML, DW SD Pro1, DW-Reihe, MB
SENNHEISER DW 30 HS Double-Sided Headset without Base Station with Adjustable Microphone Boom and Ultra NC Microphone: Amazon.de: Computer & Accessories