Alvantor Tech® Rechargeable Portable Coffee Grinder, 38 Grind Settings External Dial, 2000mAh Battery, Ceramic Burr, 25g Bean Hopper, 120–150 Min Fast Charging, Grind While Charging, Compact 2.8"×2.8"×7.9"1) Rechargeable Portable Grinder for On the GoAlvantor Tech cordless coffee grinder built for travel, office, camping, and daily use. Compact body fits easily in bags and drawers for fresh coffee anywhere. 2) 38 Grind Settings with External Adjustment DialQuickly customize grind size with an external 38 level dialfine to coarse control for your preferred taste. Simple, intuitive operation without disassembly. 3) Ceramic Burr for Consistent, Low Heat