TeiLei Antique Gift Auto Flip Clock Bell Balance Retro Home&Office Desk Flip Down Clock (Helicopter) The retro flip-down clock is entirely crafted from solid metal, and the clock combines precision electronics with steampunk design with great ingenuity. The flip-down number swatches of the clock have been made from durable acrylic. You can adjust the timing using the turn dial on the right side of the clock. 12 Hour AM/ PM Clock, Accurate quartz movement. Flip Down Minute and Hour Display, Easy to read numbers, It flips automatically every minute.