How to light up the candle LED light (1) Set a battery (CR2032), turn on the power source *Battery sold separately (2) Breathe into the sensor (3) Breathe into the sensor again to turn off the light or turn off the power source 【スペック】 Number of Pieces: 80pcs. Completed Size: H7 x W10 x D10cm Battery Type: CR2032 x1 (sold separately) Features: Candle Base