This grass trimmer is a practical gardening tool. It has a no - load speed of 7600 revolutions per minute and can cut grass with a diameter of 20CM. The no - load running time is about 2 - 3 hours, powered by a pure copper motor for stable performance. It requires around 150 minutes for a full charge and is made of aluminum tubes and plastic, combining durability and a lightweight build for various gardening needs.