High quality jade with 24K genuine gold plating,It can be massaged to the edges and corners of the face. The modeling design can ignore the facial curve and is not limited by facial features, so it is more suitable for the lifting of facial curve and facial features.Deep "skin penetrating" sound wave penetrates and tightens the movement, even the leather belt grease.Technical parameter voltage DC1 5V (one No. 5 AAA battery) working frequency: the design frequency is about 6000 vibration / minute. The body is made of aluminum alloy, the brass head is made of brass, and the outer layer is plated with real gold. The waterproof grade is ipx7 (anti immersion type). The net weight of the product is about 80 ~ 85g (including battery)