GO-2016 Tear Drop – between 10-16 hours, depending on mist level.
BBH-50 Tall – between 10-16 hours, depending on mist level.
CF-9970 Alarm Clock – 5 hours
GO-2031 Digital Humidifier – between 10-24 hours, depending on humidity and your setting.
VS-860 Aroma Diffuser – up to 8 hours