LCD Keychains:Waterproof Solar Powered Flashing LCD Keychains with Image Inside, making your logo or advertise more attactive and motional. Good for your premiums, promotional gifts and collection. Key Specifications/Special Features : New technology: Solar powered LCD No batteries needed. Flash all the time in rooms or outdoor lights Waterproof Create your own image design Key Specifications/Special Features : New technology: Solar powered LCD No batteries needed. Flash all the time in rooms or outdoor lights Waterproof Create your own image design Specifications: 1) Item dimensions: 6 x 3 x 0.8cm 2) Image files requested 3) Image size: 32.5 x 24.5mm 4) Image resolution: 300dpi 5) Image file format: PSD/TIF/EPS/BMP/AI/JPG