New technology: Solar powered LCD No batteries Flash all the time in rooms or outdoor lights Waterproof Create your own image design Good for your premiums, promotional gifts and collection Specifications Name: 36mm Solar Power KeyChain MOQ: 2000 Product Size: 36x18x7mm product Weight:0.008kg Packing:25.2*25.5*33cm Delivery date:15days park Style:opp Quantity:50pcs/box 400pcs/ctn