This document specifies the terminology and definitions, energy efficiency grades, technical requirements, and testing methods for four categories of household and similar-use health and fitness appliances: smart mattresses, therapeutic massage chairs, water-filled foot massagers, and treadmills. This document applies to the following types of household and similar-use health and fitness appliances with a rated voltage not exceeding 250 V: a) Smart mattresses with a width greater than 1200 mm that feature one or more functions such as heating or massage. b) A health massage chair with a massage mechanism as its core component. c) An aqueous foot massager featuring electric heating, water circulation, and massage functions. d) A treadmill powered by electricity, equipped with side handrails and/or front handles. This document does not apply to the following types of health and fitness equipment: — Medical smart mattresses, massage chairs, and treadmills for medical rehabilitation purposes; — Professional and/or commercial treadmills and commercial massage chairs used in group training facilities; —Ventilated mattresses, water-heated blankets, and smart beds that require simultaneous use with smart mattresses and electric bed frames.