'1. 304 Stainless steel 2. Working Current :4-6A 3. Motor DC7.4V 4. Capacity:220ml 5.Battery capacity :1500mAh /3.7V*2 6. with conical metal grinding core 7.304 stainless steel double layer filter 8. USB cable -magnetic suction charging 9.Visual bean warehouse , Easy and add coffe beans 10.One machine to fix grinding and filtration 11. Grinding thickness can be adjusted. 12. External adjustment 15 gear thickness , supply a variety of flavors. 13. One charge can grind 15-20times