Thanks to fast charging support, it takes about 2 hours time to fully charge Gionee M7 Power's huge 5000 mAh battery - from zero to 100%.
No. You cannot record 4K videos but you can record full HD videos with Gionee M7 Power.
Gionee M7 Power has 5000 mAh big battery.
Yes, you can use 2 Jio Sim cards at the same time in Gionee M7 Power.