SGS Certified to UL2849 : Ride confidently with our electric mountain bike, featuring SGS certified to UL2849 for the highest safety standards and reliable protection on every journey Power and Endurance: Electric bike for adults is equipped with a high speed 500W motor (1000W peak) and a 48V 10.4AH battery, enjoy a versatile range of 22-50 miles per charge, ideal for both short commutes and long adventures Advanced Riding Features: Our ebike is equipped with a 21speed transmission system and 5 working modes, allowing you to tackle any terrain with ease. Whether you prefer full electric, pedal-assist, manual pedaling, cruise control or walk assist, this e bike adapts to your riding style Durable and Stylish Design: Built with a 27.5-inch tire for durability and style, the integrated LCD display keeps you informed of speed, battery life, and more for a seamless riding experience After Sales Service: This adult electric bicycles arrives 90% assembled, with a one-year service on the motor, battery and the controller, you have no worry using it