Model Description: "400" SERIES. Ultra modern alarms, typifying the newest trends in design. Each of these models has a one-piece metal case . . . rich, satin-like Butler finish . . . felt cushions underneath. 30-hour movement, attractively etched silvered metal dial. Concealed mellow-toned, back gong alarm. Convenient shut-off. Model 401–Combination of conservative and modern mode. 3 1/8 inches high. Base 3 1/4 by 1 3/4 inches.