GN Netcom 2100 Jabra 2100 series Replacement Headband 0462-509
Amazon.com: Synergy Digital Wireless Headset Battery, Works with GN Netcom 9120 Wireless Headset, (Li-Pol, 3.7V, 340 mAh) Ultra Hi-Capacity, Compatible with GN 14151-01 Battery : Electronics
How To Replace the Battery Jabra GN Netcom 9120, 9125 Wireless Headset, Amigo! - YouTube