The Poseidon pipette controller is lightweight (only 178g) and is designed with user comfort in mind. The natural feel, balanced weight distribution and low force control buttons all combine to provide you with a more comfortable pipetting experience. The enviromentally friendly, rechargeable lithium battery keeps the controller running for up to 8 hours or 2,500 pipettings on a single two hour charge. The easy-fit silcone nosepiece is compatible with 1ml to 100ml serological pipettes.