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We are professional battery supplier, We support global distribution in America, Asia, Europe, the Middle East and Oceania, especially for the United States and Canada .
【Compatible models】:Avaya DECT 3749, DT413, DT423
【Battery Parameters】Specification:Volts:3.7 Type:Li-ion Capacity:1100mAh / 4.07Wh
【Battery Parameters】Specification:Dimension:73.50 x 43.50 x 10.10 GrossWeight:57
【Customer Service】: Please contact us if there is any problem with our product, we promise you a satisfaction resolution in 24 hours.