Whistle key Seeker,Suitable Gift-giving occasion: Wedding Gifts, Promotion Home, Advertising Promotion, Office Welfare, Business Public Relations, Customer Reporting, Opening Ceremony.Do you often worry about finding no keys?The little keys are missing everywhere, and you need our key finder.If you whistle, the product will make a sound and light up the red light,You will find keys where you have been searching for a long time.The product can't be customized logo.