USB rechargeable. Wireless use]: It can be used while charging, or it can be used directly after charging. It can be used for 3 hours when fully charged. Super Quiet and Vibration Design: The noise of the dog hair clipper is less than 50 decibels. The noise will not frighten your dog and you can trim their fur easily and quickly Safe and Sharp Blade: Made of ceramic and titanium, it has excellent cutting performance. Specially designed blades can protect your beloved pet from harm. Wide Use: Suitable for all types of pets and hair types, no matter the size of dogs, cats, rabbits, etc. Small in size and easy to carry, this pet groomer is also equipped with 11 tools. Purchase Guarantee: If you have any problems,pls contact us.