7 incredible functions of vibration, pulsation and escalation. 3 interchangeable Silicone sleeves included. Use massager with or without sleeves. Specially designed sleeves have inner ridges for easy removal. USB rechargeable (charging cord included). One year warranty. Silicone (sleeves, button), ABS (massager), ABS with Silver Plating (decor). 2.5″ x 1.25″/6.25 cm x 3.25 cm (massager), 3″ x 1.5″/7.5 cm x 3.75 cm (standard sleeve), 2.75″ x 1.25″/7 cm x 3.25 cm (arouser sleeve), 3.5″ x 1.25″/9 cm x 3.25 cm (“G” sleeve). From CalExotics.