Builtin 1000mAh rechargeable battery charges fully in 23 hours via a computer or other USB power source and can make up to 15 cups of juice. Efficient blending performance: 12 stainless steel blades with a speed up to 21,000 RPM. It takes about 40 seconds to blend a cup of fresh smoothie, protein shakes, or juice. Safety and durability: constructed with stainless steel blades and ABS materials for durability and clarity. Includes silicone charging port protection and a nonslip, shockabsorbing base. Portable design: 700ml capacity. Features an antislip lanyard for convenient carrying, making it ideal for travel and onthego use. Use scenarios: at work or the gym for a quick nutritious drink between activities; during road trips or commuting for a fresh beverage wherever you are; outdoor activities or camping for convenient blending without access to outlets.