The Lenz Body heat system warms the body from head to toe. The lithium packs rcB 2000 can be used for all models of Lenz Heat Socks, Heat Vest, Heat Gloves, Heat Jackets and Heat Pants. The lithium packs are connected with push buttons. The lithium packs are small, light and provide up to 22 hours of warmth at the touch of a button for work, sport and leisure. The charging cradle allows for easy charging and is also ideal as a transport box. This increases performance and concentration even in cold temperatures and ensures blood circulation. The lithium packs rcB 2000 can be controlled directly on the lithium pack. With the Lenz heat app, the heat can also be continuously regulated using a smartphone. Ideal if the lithium packs are under several layers of clothing.