Rechargeable - Non-removable 430mAh Li-Ion battery

Electronically

Advanced Stronger Build — Extra-sturdy design gives the M2 durability and a longer lifespan

But this is done more easily and accurately with the electronic burr regulation on the Prometheus

Quamar Sirio-Q Coffee Grinder Camping coffee Rechargeable - Non-removable 430mAh Li-IonWith variable speed, 77mm flat burrs, and an extensive range of grind settings, theres nothing that you cant do with the Quamar Sirio Q Coffee Grinder. This dynamo is equipped to handle anything you throw at it and the results will be spectacular: beautiful, uniform coffee grinds with minimum fines. Efficiency At Its Finest Created for bustling coffee shops, the Sirio Q allows baristas to work in the most efficient ways. Its dynamic grind activation