Come and Check Our Promo Solutions.The acrylic knit beanie features an integrated LED light panel made of ABS and TPR. It uses two button cell batteries that are included and replaceable and features four bright white LED lights with three levels of brightness: 100%, 75% and 50%. From the "off" setting, press the black button once to achieve 100% brightness, twice for 75% and three times for 50%. Pressing it a fourth time turns the light off. Remove light panel prior to washing and handwash only. Top off your marketing plan with a successful promo tool. Pls check inventory and detailed info with us before placing your orders.