[【Low Vibration and Noise】: The dog nail grinder is equipped with the newly developed low noise technology motor with 12000 r/min excellent performance working as low as 45dB quietly helping your pet dogs and cats to finish their nail trimming work in a quiet condition "【4 Speed Switches and 4 Sanding Ports】: Our electric dog nail trimmers are designed with 4 speed switches the low gear can be silent sanded meticulously the high gear can sand the dogs hard nails and the 4 sanding ports are suitable for use on large medium small and puppies a safe and professional dog nail trimmer grooming tool" 【USB Charging and Long Time Standby】: The cordless pet nail grinder is charged by USB with Liquid crystal power display 3 hours charging time up to 3 hours + use time the electronic control system is debugged to reach the nice working condition 【Diamond Bit Grinder Head】： Electric pet nail trimmer is made of hard diamond grinding head with dust cover it can efficiently help dogs polish hardened nails and help pets do nail grooming 【Built-in LED Lights + Easy to Use】: BETOPET dog nail grinder has a built-in LED light so you can see very clearly when you are helping your dog to polish his nails to avoid accidentally injuring your dog the whole nail grinder has just 2 buttons very easy to use，carry and store]