Aviation Gifts: Our Dual Time Desk or Wall Clock has a classic design reminiscent of instrument gauges from the 1930s era. The period dials of black and white allow the user to display two different time zones. The solid aluminum and brass construction, along with hex head screws, capture the early century authenticity. What’s nice about the Dual Time Clock is its versatility as it can be hung on a wall, or placed on a desk or shelf. AA battery is needed to power the quartz clock movement.