Many medical devices in the existing market need a continuous power supply, but the existing batteries are fast in power consumption, high in continuous cost and serious in environmental pollution caused by disposable batteries. The team behind Start Now wanted to try using human bioenergy to continuously power medical equipment. The flexible thermoelectric battery can be used for a long time without being damaged by an external force, with long service life, high environmental protection and simple and convenient operation. The existing non-rechargeable "zinc air battery" on the market can be used for only 2-7 days, with unstable electricity, serious environmental pollution and inconvenient operation for the elderly; the cost of rechargeable lithium battery is high, the power supply time is short, and it needs to be charged every day.