ReVIVE ReStore Note 3 Battery Case Power Bank - Rechargeable Protective Case / 4200 mAh Power Bank - Works with Samsung Galaxy Note 3 AT&T / T-Mobile / Sprint / VerizonIncludes Bonus Stylus Power case built specifically for the Samsung Galaxy Note 3 4200 mAh battery provides an extra charge for your Note 3 when you need it most Quick charging case charges in less than 1.5 hours via micro-USB Top portion of case slides up and down, locking phone into place in the case When your phone needs a charge, simply hit the case's power button and enjoy extended battery life