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