Big 3.5 l volume; 140 g multiple filter; 360° water inflow to filter. The seven new filters effectively reduce the scale of residual chlorine and heavy metals. Double water outflow from the filters. AS materials imported from Germany. Featuring a life indicator and portable UV light. Achieves a sterilization rate of as high as 99.99%. Free cover water injection design, convenient and easy to operate. Low power UV germicidal lamp, rechargeable design.