A foldable case for storing a multimedia device including a first protective sheet, a second protective sheet and a connecting unit is disclosed. The second protective sheet is used for securing the multimedia device. The connecting unit disposed between the first protective sheet and the second protective sheet may serve as a hinge with respect to which the first protective sheet is foldable over the second protective sheet. The connecting unit has an earphone receiving cavity, and a magnetic element is located in the earphone receiving cavity for magnetically attracting a wireless earphone. Moreover, as the wireless earphone is in the proximity of the earphone receiving cavity, the magnetic element magnetically attracts the wireless earphone so that the wireless earphone may be accommodated within the earphone receiving cavity.