Yes, Vivo V5s does have eye protection mode, too.
Vivo V5s has 3000 mAh battery which is non-removable. It offers talktime of upto 12 hours on 3G networks and standby time of about 270 hours.
Yes, you can play FM Radio on Vivo V5s.
Vivo V5s has ARM Mali T-860 MP2 graphic processor GPU.