General ali-Q features: Sensitive touch-control aspirate and dispense buttons for standard pipetting Separate (textured) aliquot/multidispense button Aliquoting/multidispensing volume setting dial 0.45 μm replaceable nozzle filter (2 included) Rechargeable lithium ion battery (USB charger included) Wall mount included Individually serialized Calibration certificate included (Original calibrated at 0.5mL/5mL; LS calibrated at 0.3mL/3 mL) One-year warranty