Description Different from these simple similar product, this automatic golfs trainer are made of material and powered by 2 AA batteries(not included), let you use it more conveniently and easily. It can help you practice golfs well whatever home or outdoor. Features - Color: Black.- Material: Plastic.- Size: About 24.00X16.50X5.00cm/9.43X6.48X1.97inch.- Power: 2 x AA Battery(Not Included).- Made from material, durable and professional.- Designed to simulate the exact conditions of putting into a real hole on the green by it's ground-breaking parabolic curved design.- Full auto design make you use it more conveniently.- Build repetition into your practice to improve your pace putting and to practice pressure putting.- Suitable for indoor and outdoor putt exercises, more practical.Packing list: 1 x Automatic ball machine