Vivo V5s has ARM Mali T-860 MP2 graphic processor GPU.
No. Vivo V5s is not waterproof.
Yes, Vivo V5s has Sony IMX376 Exmor RS sensor for the selfie camera.
Vivo V5s comes with latest Android 6.0 Marshmallow OS which has got Vivo's patented FunTouch 3.0 skin layer. Since the device is newly launched, we do not expect that company will release the new software update immediately.