features 1[Three Modes] Automatic ball launcher with 3 meters/9.8ft,6m/19.6ft,9m/29.5ft distance mode,one button control,adapt to different sizes of indoor and outdoor space. 2[Rechargeable] Automatic tennis ball launcher with built in 2200mAh rechargeable large battery,can work about 5 to 6 hours after fully charged (subject to actual time). 3[Mini Tennis Ball] Designed for pets,the dog automatic ball thrower comes with 3 mini tennis balls,you can also use other similar sized balls to replace them. 4[Interactive] You can also play with your pet and enhance the relationship between you and your dog. Train your pet's patience and consistency,and also develop your dog's intelligence. 5[Premium Material] This ball launcher is made of premium plastic material,sturdy and durable to ensure long term use,can be played indoors and outdoors.SpecificationItem Type: Dog Automatic Ball LauncherMaterial: PlasticBall Diameter: Approx. 5cm / 2.0inBattery Type: Lithium Battery (Shipped with Built in Battery)Battery Capacity: 2200mAh .wang-edit-text{ font-family:'Arial' important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x DogAutomaticBallLauncher3 x Tennis Balls1 x Charging Cable1 x English ManualNote1. Manual measurement,please allow some errors.2. Try not to make the ball too dirty or wet,this will affect the performance.