Main Features: – Multi-function Filter – Applicable to Various Occasions – High Concentration of Negative Ion Release – Decomposition of Harmful Substances – Large Fan Speed up Exchange – Intelligent Design Start with the Car – Built-in Aromatherapy Cotton Trough Specification Model:NBO-J011 Rated voltage:DC12V Rated powed:≤14W Operating temperature:-10-70℃ Negative ion concentration:≥800W Color:Wood grain/Polar gray Filter:three in one Filter size:115 x 115 x 12mm Dimension Product weight: 0.95 kg Product size: 148 x 148 x 56mm Package Contents 1 x Car Power Cord,1 x Non-slip Mat,1 x Rubber Anti-slip Strip (placement),1 x Frame, 1 x Strap, 1 x Screw (bundled installation),1 x Manual