SMAVCO Bundle Battery for Plantronics CT14 ( 2.4 V, P/N 80639-01, 81087-01 ) Plus Micro USB Cable, 700mAh Capacity: 700mAh Dimension: 44.76 x 20.73 x 10.68mm Compatible Part nos: 80639-01, 81087-01 Compatible Models: Plantronics CT14