SMAVCO Bundle NTA2479 EXTENDED Battery for Logitech MM50, Pure-Fi Anywhere Speaker 1st Plus Micro USB Cable, 3000mAh Capacity: 3000mAh/11.10Wh Dimension: 65.77 x 20.18 x 18.38mm Compatible Part no.: NTA2479 Compatible Models: Logitech MM50, Pure-Fi Anywhere Speaker 1st