... caps, shoes, socks, etc.2. Souvenir, makes your product be more memorable.3. Decoration gift, makes your product be more elegant ... flashing module with colorful LED light, widely applied for wearable, souvenir, decoration gift, promotional gift, children's toys, festive & party, ... bars, anniversary, wedding, party, holloween, holiday, birthday, home decoration and so on.6. Battery: AG10 or AG13 or AAA ...