Soloking High Capacity 6500mAh External Battery Charger for Samsung Galaxy S7, with USB Port Output Support Charging for Other Mobile Device Simultaneously (black) Soloking Battery case with built in 6500mAh polymer Li-ion battery which can effectively provide 100% extra battery life to your samsung galaxy S7, an excellent extended battery case that gives you backup power all day long,thanks to the high capacity battery,works as a protective case to safeguard your phone from scratches,fingerprints,dusts and bumps This power case has perfect cutouts which allows you to access to all cameras,microphones,sensors,controls and most importantly headphone jack USB port on the side of the external battery case allows you to charging for other mobile device simultaneously,such as iphone,ipad,Samsung, LG, HTC,Nokia,Blackberry etc Power switch allows you to switch on/off the external power bank case ,built in kickstand offering a comfortable angle for watch movies,web-surfing Rechargeable for over 500 cycles,Built-in short circuit and over-charge protection. All soloking charging case products comes with 1 year warranty.Contact us via Amazon if you are not 100% satisfied with your new samsung galaxy s7 rechargeable battery case