Shinwa Sokutei Digital Caliper with Solar 19983 Panel, 150mm,

Power source: Solar panel, lithium battery (CR2016 x 1) *The included battery is for monitoring purposes and may have a short lifespan. Minimum reading: 0.01 mm Error: ±0.03mm Repeatability: 0.01mm Operating temperature: 0~40℃ Storage temperature: -10~60℃ Storage humidity: 80% or less