SDW 5000 Series - DECT Wireless Headset System - SDW 10 HS | SDW 30 HS | SDW 60 HS | SDW 3 BS | SDW 5 BS | BTD 800 USB
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Amazon.com: Synergy Digital Wireless Headset Battery, Compatible with Sennheiser SDW 10 HS Wireless Headset, (Li-Pol, 3.7V, 360mAh) Ultra High Capacity, Replacement for Sennheiser AHB552826TPC Battery : Electronics
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