Vivo V5s is not much heavy. Despite of having 5.5 Inch display and bigger battery, the phone weighs just about 154 grams.
Yes, Vivo V5s 64GB is a metal body phone.
Vivo V5s is available in Matte Black, Rose Gold, Crown Gold and Space Grey colors.
Vivo V5s has dual core GPU.
Yes, Vivo V5s has Sony IMX376 Exmor RS sensor for the selfie camera.