zeroHero RUI Portable Electric Coffee Grinder Experience precision grinding with the zeroHero RUI Portable E-Grinder, designed for effortless coffee preparation. Featuring an innovative integrated body design, an adjustable grind size function, and a two-stage “cut first, then grind” burr system, this grinder ensures a consistent, flavorful extraction while enhancing the aroma and sweetness of your coffee. Crafted with aluminum alloy and stainless steel, it boasts a 25g bean and powder hopper capacity and an 800mAh battery for portability. Perfect for espresso, pour-over, moka pots, and cold brew, it simplifies the grinding process with one-touch operation and automatic tare & recording functions. SPECIFICATIONS: Capacity: 25-30g Charging time: 90mins Grinding times per charge: 15g / time, 20-30 times Material:Aluminium alloy, stainless steel, PC, POM, silicone