Features: 1) Button push type with up and down flower engraving 2) Made of aluminium alloy, with oxidatin surface 3) Beautiful flower engraving 4) Customers' logo printing is available 5) Lamp type: Lens end lamp 2.2V, 0.25 6) Luminous flux: 1.8LM 7) Power requirement: 3 volts, 2 x AAA size battery