Military Clock Manual

Installing the Battery

Your clock requires an “AA” alkaline battery. 

•       Open the bezel assembly on the front by turning the black lock knob counterclockwise.

•       The clock’s quartz movement is affixed to the back of the dial. Insert the battery, set the time, and carefully replace the dial and bezel.

Radio Room Clock (6” Only)

•       Open the bezel assembly on the front by turning the black lock knob counterclockwise.

•       Remove the three screws holding the dial and movement assembly in the case.

•       The clock’s quartz movement is affixed to the back of the dial. Insert the battery, set the time, and carefully replace the dial and bezel.

Warning: Old batteries left in the clock may leak and cause damage, which is not covered under warranty

Setting the Time

Access the back of the movement for your clock model (see Installing the Battery)

Turn the small black knob until the hour and minute hands indicate the correct time

Radio Room Clock (Zulu hand only for 8.5” model): Carefully remove the three screws that hold the dial and movement assembly into the bezel. Set Zulu hand manually and re-install.

Access the exact local time through the United States Naval Observatory website: https://www.time.gov 

Setting the Second Hand

If your clock has a second hand, you must first stop the clock by removing the battery.

When the sweep second hand points to “12,” promptly remove the battery.

Set hands a few minutes ahead of the actual time.

When the actual time coincides with the hands on the clock, quickly reinsert the battery.

Military Clock Care

Your new Chelsea Clock item is designed and crafted for maximum precision and durability.  To help ensure many years of enjoyment, follow these care & use tips:

•       Moisture – This piece is designed to be water-resistant. However, it is not waterproof and should not be submerged in water or subjected to heavy rainfall.

•       Rubber Seal – The inside rim of the hinged bezel has a rubber seal.  Be sure to tighten the bezel’s locking bolt completely when closing to ensure a water-resistant seal.

•       Outdoor Placement – If mounting this piece outdoors, it’s best to place it under a covered area, away from direct sunlight, rain and snow.  Avoid areas affected my extreme shifts in temperature.

•       Lenses – Clear lenses are made from glass.  Clean with a soft, damp cloth. Other materials may cause scratching.