Plastic, rubber and optic fibre. Batteries are not rechargeable or replaceable.Batteries inlcuded LED light time range from 10-15 hours. Peacock Fibre Optic LED ring comes in 3 different colours, blue, red and green send randomly The LED light is emitted from the Peacock in a variety of different amazing colours and changes in varying flashing patterns, extending along the fibre optic tail. For Birthday party,Halloween, Disco, Club, School Dance, Carnival, Weddings, Christmas, Amusement Parks, Summer Fayre and many more functions.