+ built-in infrared smart sensor, low consumption pump design + fully automatic operation by motion activated + non-dripping innovative design eliminates any waste or mess + touchless stop germ transfer and cross-infection. Unit size: 13.5x8.3x20cm Material: abs Unit weight: 0.233kg Liquid capacity: 400ml Dispense dosage: approx 1ml~2ml Sensor range: from 2~10cm Activation time: 0.5 second Certification: ce & rohs Power: dc 6v, 4pcs aaa alkaline batteries.