Model Number: SBA-1311 Brand Name: Silver Bell, Scent-O-Tone Key Specifications/Special Features: Green energy products Uses air natural convection of design and passed US invention patent Without electricity, whenessence storage of air by way of passive principle up to exhaustPVA essence storage cable to adsorption 80-100 essence oilPVA material cable can be resolved and other body material cable can be recycledVarious colors are availableCustomized orders are welcomeOEM is accepted