Dimplex BOF4056L Opti-Myst Pro Portrait-Style Indoor Fireplace, Black Easy-fill water tank: Offers 14 to 17 hours of continuous operation before refilling is required. OptiMyst remote: Includes remote control - operates heat (full-heat and half-heat) and smoke effect on/off Green: The green alternative. No harmful particulates or emissions and 100% efficient. Realistic log set: Dimplex fireplace logs are hand crafted and molded from real wood logs, offering an incredibly realistic log set. Direct-wired: Designed to be direct-wired to a 120 volt circuit for a seamless look. (Optional plug kit available if desired).