For iPhone 7 Dual SIM card dual standby Adapter with Metal bumper Protective case

Battery capacity :3.7V/1800mAh Li-polymer
Sturcture:Metal frame+battery pad
Input :DC 5V/1A( lightning female)
Output :DC 5V/1A
Sim Type:Mirco SIM
Network Standard:GSM
Network band: GSM850MHz/EGSM900MHz/DCS1800MHz/PCS1900MHz
Color:Silver/Black/Gold/Rose gold