1. The handy heat massage designed to fit ergonomics, light and easy to take.
2. The outer case used by special ABS materials, which is enduring crash.
3. It is tempered glass made by high heating, not easy break; also it��s endure acid and alkaline.
4. There are 3 raised spots on the glass designed for fixed-points shiatsu, warmed acupuncture and massage purpose.
5. The inner part of heating device sealed up by environmental protection materials named fireproof resins.
6. It��s a dual protect device of temp. Controlling and induction when the temp is over heating and abnormal that will be cut-of automatically to keep it safely.