Each works independently or together 10 function Waterproof Phthalates free RoHS compliant Materials: silicone and ABS Vibe 1 Size: Length: 3.55″, Width: 1.5875″ Vibe 2 Size: Length: 4″, Width: 1.3875″ Rechargeable Charging Time: 1.5 hrs. Working time: 2 hrs.