1. AA size water battery, 2,1.5v water powered battery, battery 3.battery with water operated, 4.logo available HS-8519, water batteryAA size water battery, 1.5v water powered battery, battery, green eco product,features:water operated battery, green product, eco friendly to environment,power could reach 1.9v the most per piece,logo could be large printed on the outer sticker,