FeaturesIf there is no operation for 3 minutes, the lottery machine will automatically enter shutdown mode. Easy to UseShort press key 1 to save the record. Long press to enter record search mode. 10 groups of numbers can be saved in each mode, and when the 11th group of numbers is saved, the first group of numbers will be automatically overwritten. AI Algorithm Probability Double Lottery PickerShort press the number 2 button to scroll, long press to switch between mode. Lightweight and PortableNumber Picking Machine is lightweight and portable, very convenient for you to carry. ApplicationLottery Selector is perfect for cafe, KTV, restaurant, club, sweepstakes, recreational activity, and more. Size Chart: 5.5cm x 3.5cm x 1cm / 2.17inch x 1.38inch x 0.39inch Package Includes: 1 Lottery Picker 1 Lanyard 1 Manual Note: 1. This is not an infant toy; keep away from children to avoid ingestion. 2. Please allow slight variations due to manual measurement and different display settings.