DURABLE MATERIAL: The washing machine is made of TPR materials and environmental protection ABS. It is durable that can bear about 1 kg of clothing weight. Note: Please install the suction cup on the bottom of the washbasin or bucket, not the curved wall. AUTOMATIC SHUT DOWN: USB power supply with DC 5V. The washer machine will automatically shut down after running for 30 minutes and will restart the USB plug after one minute. ULTRASONIC VIBRATION EFFECT: The ultrasonic vibration effect simulates manual cleaning for thorough cleaning and preventing knots. With low noise design(lower than 60db), it doesn't disturb your rest or sleeping. WATTER AND ELECTRICITY SAVING: This Portable washing machine not only saves one-third of the water but also saves electricity than the washing machine. SUITABLE OBJECTS: The washing machine is perfectly good at washing light clothes, such as Tie, T-shirt, Underwear, Baby clothes and so on. The round design is easy to carry for students, travels, and businessman.