Keystone KSTHW50LAG Warm Mist Humidifier, 1.3-Gallon Warm mist humidifier with 1.3-gallon Capacity 2-Setting mist intensity control (high and low) Mist output: 1.7 Cups per hour on high and 0.8 Cups per hour on low 10.5-Hour Continuous running on high and 21-hour continuous running on low Refill indicator, automatic shut-off, and tip-over switch