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Cello DUET is a cordless, battery operated air purifier including both HEPA filter and negative ionizers technologies. The battery life is up to 20 hours and can be easily charged through a Type-C USB socket. There are 4 fan speeds to suit for different needs. The concentration of negative ions is up to 8 millions ions per cubic centimeter, measured from 1 meter. Rechargable cordless battery
Merv 13 HEPA Filter / Ionizer
Coverage: 150 sq. ft. x 8 ft. (at 1 ACH)
Application: Personal, Cars, Cubicles
CADR : 20 CFM (3-speeds)
Dimensions: 6.3”(D) x 10.6”(H) 2.8 LB
Ion Concentration: 8 Million Ions/cc
Cordless (Rechargeable Battery)
