The Volas Vitality™ MagicPro 2.0 page does not list a case, charger type or battery size.
Take it off, set it on a dry stable surface, and keep the button panel off a table edge. No waterproof rating is listed, so keep it away from water. If a cable arrives in the box, follow that hardware.
Confirm the same device on the Volas Vitality MagicPro 2.0 product page.