As an oversized diffuser (6.3 inch x 6.3 inch) it s big enough to fill large open spaces with relaxing aromatherapy. Energy efficient this 240ml capacity machine runs for up to 7 hours before needing to be refilled and the auto shut off ensures safe operating even if you forget it s on (because it s so quiet). 1 year limited warranty Includes-10ml ZAQ 100% Pure Lavender Oil. Vibrantly colored top glows with soft led lights (or remains off you choose) lite mist aromatherapy system silently mists essential oils into your space