All-in-one design?? drip kettle + handmill burr ceramic grinder + funnel mesh filter?? travel mug are combined in one?? portable and suitable for camping trip?? office use?? and travel. Perfect birthday or business gift!</br>Built-in burr ceramic grinding?? consistent & durable performance?? capacity: up to 1 oz (30 grams). Tumbler cup capacity: 250ml</br>Smart and easy grinding?? rotate manual lever clockwise by your hand.</br>Stainless steel funnel filter & stainless steel vacuum mug?? eco-friendly?? super easy to clean?? easy to re-use.</br>Requires no batteries or electricity. With KOHI portable all in one coffee maker?? you can enjoy the freshest coffee no matter where you are!</br><br/>http://www.amazon.com/gp/product/B01MV5E892