Feature: [Three modes] Automatic ball launcher with 3 meters/9,8 feet distance mode, 6 m/19,6 feet, 9 m/29,5 feet, one-button control, do adjustment of different sizes of indoor and outdoor spaces. [Battery] Automatic tennis ball launcher with built-in large 2200mAh battery, can work about 5 do 6 hours after full charge (depending on the actual time). [Mini tennis ball] Designed for pets, the automatic dog ball thrower is equipped with 3 mini tennis balls, you can also use other balls of similar size to replace them. [Interactive] You can also play with your pet and strengthen the relationship between you and your dog. [Material Premium] This ball launcher is made of high quality plastic, mocna and durable to ensure long-term use, can be played indoors and outdoors. Specification: Item Type: Automatic Dog Ball Launcher Material: plastic Ball diameter: approx. 5 cm / 2,0 inches Battery type: Lithium battery (supplied with built-in battery) Battery capacity: 2200 mAh List of packages: 1 x Dog Automatic Ball Launcher 3 x Tennis Balls 1 x Charging Cable 1 x English manual Note: Try not to keep the ball too dirty or wet, it will affect performance. Fully charge the machine before first use. Press the on and off button at the bottom to turn on the power. Make sure that no one is in front of the motion sensor 2 m/6,6 feet. Press the button to select the distance. Place the ball in the launcher, the sensor will detect the ball entry and automatically shoot the ball.