Replacement battery for Audio Guide. Specifications: 1100mAh, 3.7V, Li-Polymer. Compatible with: Audio Guide, LBT-1300, OKAYO Digital Pendant Transmitter, OKAYO LBT-1200. Replaces: Listen Technologies AHB623450PJT, OKAYO AHB623450PJT. Listen Technologies replacement battery designed for Headset devices. Engineered for consistent power output across many charge cycles.