As for design of V series gas water heater, black aluminum oxide piece is combined with IMD piece. Segmentation ratio is optimized to improve the visual experience of the product. Three water use modes are available, so user can operate the product more conveniently, improving the use experience. The concept of safety status prompt is put forward for the first time. The user can intuitively see the product use status and detection status of CO, CH4 in surrounding air, realizing real safety of the product and improving the safety experience.