Features: 1.Safe&Scientific: the charging way is USB charge with high intelligent and safety.You can feel comfortable to buy and use. 2.Low Consumption: the charging time needs 2 hours and you can use it in 180 minutes continuously,which can be used in a long time with low consumption. 3.Durable Material: grinding head is made of high quality material which is durable, you do not need to worry it will be damaged easily. 4.Two Choices: there are two kinds of grinding armor you can choose.You should buy a manicure without a condom for large dog,and the one without a condom is for small dog. 5.Low Noise:Low vibration and noise design make pets more comfortable and you can have a smooth work of cleaning.