Mini Table Robot Training Automatic Ping-Pong Ball Machine Green : PE plastic, long service life, more durable, simple and easy to learn, suitable for all people Number of balls that can be loaded: 15 balls for normal use (without table tennis balls) Falling angle: point service, no rotation service Serving frequency: the number of servings is about 15 per minute, and the machine is given once every 4-6 seconds Power supply: 4 AA batteries (you need to bring your own battery) - Inner mesh panties Material: plastic; Size: 24x16x16.3 cm/9.45x6.30x6.42 contains: 1 table tennis machine 1 specification Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-GONGQ trading 3