About Product:Brand: baishangwu model: donut humidifier item No.: donut humidifier applicable area: 10-20 square meters function: humidifier spray water tank capacity: 1 liter below the number of mist outlets: 1 operation method: mechanical timing function: power type: USB shape: donut noise: below 36dB rated voltage: 5(V) rated power: 2.5(W) applicable objects: foreign trade on board: no cross-border supply: no