EPOS I SENNHEISER HSA 20 - Headset accessory kit - for IMPACT D 10, IMPACT DW Office, Office ML, Office USB, Office USB ML Group Accessories Manufacturer EPOS Manufacturer Type. Product Description: EPOS I SENNHEISER HSA 20 EAN/UPC 57148005377 Product Description: EPOS I SENNHEISER HSA 20 - Headset Accessories Kit Designed for Headset Package Content Earphones, Assembly Adapter, 3 Earpieces (S, M, L), Synthetic Leather Cover Designed for IMPACT D 10 HS, D 10 Phone, D 10