- Smart Bl uetooth APP for Precision Manual Control -- Take full command of your brew via the dedicated Bl uetooth APP (HappyGo CERA ). Precisely adjust key parameters like water temperature, pre-infusion time, and pressure directly from your phone. This feature breaks the limits of traditional portable makers, allowing you to fine-tune each extraction like a professional barista for a personalized and repeatable perfect cup - 20 Bar Stable High-Pressure System for Rich Crema -- The heart of the coffee maker is its professional 20Bar stable high-pressure system. It generates powerful pressure instantly to deeply extract the essential oils and aromas from coffee grounds, effortlessly producing a dense, golden crema. It creates the perfect foundation for a pure espresso shot or a remarkably flavorful latte and cappuccino - Professional 58mm Portafilter for Authentic Cafe Taste -- Engineered for the discerning coffee enthusiast, the espresso machine features a standard 58mm professional stainless steel portafilter. The larger size ensures even water distribution and consistent extraction, unlocking the full potential of your coffee beans for a rich, layered flavor and a generous, velvety crema?delivering authentic cafe-quality espresso anywhere - For Optimal Performance: Use a 30W+ Quick Charge Adapter -- To power the 20Bar high-pressure pump consistently, we recommend using a power adapter with a rated output of ≥30W. Supporting mainstream QC 2.0 and PD 3.1 quick charge protocols, a compatible adapter ensures the machine performs at its peak, significantly reduces heat-up time, and enhances your overall experience - Designed for Life on the Go, Your Portable Cafe -- With its compact design and long-lasting battery, the portable coffee maker is your reliable mobile cafe. Whether for a quick office break during a busy day or a relaxing weekend camping trip, it allows you to enjoy a freshly brewed, high-quality cup of coffee made by your own hands in just minutes Product description 3*4500mAh Capacity Battery MCH Ceramic Heating Technology USB-C Charging 20Bar High-pressure Extraction