1Built In 2000mAh Lithium Battery: This electric rope skipping machine has a built in 2000mAh lithium battery, which can be used for 35 hours of jumping rope on a single charging, the type c charging port connection is suitable for all charging ports. 210 Speed Levels: This electronic fitness jump rope features 10 speed levels from low, medium to high for a different strength jumping experience, and the jump rope comes with a counter for up to 999 counts to monitor your workout progress at all times. 3Low Noise: This smart rope skipping machine adopts noise reduction technology with high power and low noise. The working noise is less than 50db, which makes you have a better experience when jumping rope. 4Multifunctional: This automatic electric jump rope is multifunctional, with intelligent automatic design, no need to hold hands, you can install two jump ropes, multiple people jumping rope at the same time, set the goal, enjoy the fun of fitness exercise. 5Wide Application: This electronic counting rope skipping machine has a wide range of applications which can be used in office, gym, travelling, at home and on business trips.