SolokingTM Rechargeable Extended Charging Case,4500mah Protective Charger Case for Htc One M8 with Kickstand+4 Led Charge Indicator Light+perfect Cutouts (Black) Soloking Battery case with built in 4500mAh polymer Li-ion battery which can effectively provide 100% extra battery life to your HTC one M8,an excellent extended battery 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 Built-in kick stand that offering a comfortable angle for watch movies,web-surfing Power switch allows you to switch on/off the external power bank case and 4 Led indicators for power balance(0--25%--50%--75%--100%) 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 HTC one M8 external battery