Product information: Power supply: USB Noise level: 50 db (a) ~ 60 db (a) (inclusive) Color: No.209 white, No.209 apricot, No.209 ice green Motor type: brushless motor Rated voltage: 36 V Additional functions: hanging neck design Number of blades: 5 pieces Rated power: 5 W Size: 123 × 65 × 67 mm Shell material: ABS plastic Control mode: mechanical. Applicable area: 10 square meters at most. Wind speed gear: 3rd gear