Adjustable speeds Powerful motor fills 25ml under 12 seconds. Six different speed settings for both aspiration and dispensing. Digital display Shows battery status and aspiration/dispending speed. Flashes when battery is low and turns off after 20 seconds of non-use. Aspiration and dispensing buttons Featuring separate speed for aspiration and dispensing modes. Electronic Break System (EBS) Maximizes the speed and precision. Pipette at maximum speed and press the EBS to slow down at the last second.