Sennheiser DW20 Pro1 Monaural DECT Noise Cancelling USB Wireless Headset Print Email Call 0151 653 8082 for price. SKU: SDWPRO1 Add to Wishlist Back to: USB Headsets Ask a question about this product ×Close Sennheiser View all Sennheiser Products Close FREE delivery on orders over £50. 100% money back guarantee if not 100% satisfied.* Our secure checkout accepts all major debit/credit cards and PayPal. Expert Help & Advice 9:30am -4:30pm Mon - Fri. Call 0151 653 8082. Description Model: DW20 Pro1 USBManufacturers Part Number: 504305Condition: New Single ear wideband wireless headset, connects to desk phone and PC softphone via USB.