No. Vivo V5s does not have stereo speaker set. It has mono speaker.
You will get Vivo V5s, Vivo XE100 earphone, User manual, Micro USB to USB Cable, USB Power Adapter, SIM Ejector Pin, Protective Case and Protective Film (applied) as in-the-box accessories.
Vivo V5s has Sony IMX376 Exmor RS sensor for the front selfie camera while rear camera is of CMOS BSI sensor.
No. Vivo V5s is not waterproof.