This is a very good phone from HTC and have everything also the dual sim. Usually at this price if you will look in samsung, sony etc you will see that those phones do not offer dual sim. This is very high configuration phone and a suitable handset for a power user.
Processor : 1.6 Ghz Octa Core processor is a mighty and you will get all the power in your hand. It will be suitable for playing high end games as well as all the high end apps like adobe photoshop.
RAM: Ram is 3GB and this is good ram for multitasking and you can easily enjoy a good multitasking in your phone. No app will be force closed in this phone and you will get good experience.
Battery: Battery is 3000 Mah and will give you enough juice for whole day. You can also enjoy slight gaming but heavy gaming will suck the battery soon.
Camera: HTC phones have good camera quality in general. This phone have 13 mega pixel camera. and will clic amazing pics.You can expect good low light photography too.
This is a good flagship from HTC and thus this phone is good in this catergory.