About PETGEEKLove pet, live smart. PETGEEK is a high-tech and caring pet brand. With this vision, we gathered a group of experts who have geek spirit and also care a lot about their pets. And we set out a mission dedicated to offering a smarter and happier lifestyle for all pets, to exploring the new possibilities for pets.PETGEEK production process pursues the world standards and have passed ISO9001 Quality System Certification.PETGEEK Smart Bone-Model K90759DSize: 8.1 inches in length, 2.5 inches in wheel diameter, 4.6 inches in tail lengthMaterial: TPU/PC+RubberBattery Type: Polymer Lithium-IonBattery Capacity: 850 mAhCharging Time: 1.5-2 hoursWorking Time per Charge: 2 hoursNotes:1.The dog entertainment toys for alone is especially designed for pets, not for children2.Not a chew toy. Do not provide it for heavy chewers. Please prevent your pet from chewing the USB cable to avoid electrical shock when it’s plugged in. Always unplug it when you finish the charging3.The power core part is not washable4.Check the device regularly, in case the core is damaged and the electrical power will hurt your dog5.It is recommended to use the device where the ambient temperature is between 0 degree Celsius and 50 degrees Celsius.