Kailian LED Earring Night Glowing LED Jewelry Eardrop Dangler Diamond Butterfly Shape Pairs Best gift for yourself or for the one you love, Amazing Gift for girls, womens, girlfriends and others. To activate your Light Earrings, push the earring through your earlobe's pre-pierced hole and firmly attach the other half on back, light will turn on and stay on. Steady light function only. Power: 1*LR521 button battery (replaceable, included) High quality Material: Stainless steel earring with Cubic Zirconia stone ? Kailian &reg; Delivery: FBA (Fulfillment By Amazon) can be delivered for 1 day. FBM (Fulfillment By Merchant) will take 5-14 business days arrived your home. working days to ship (not shows like Amazon page: 14-28 Working Days)