Art inspired printed GLASS tide time wall clock of 20cm diameter, showing the hours to high & low tides Gold coloured single hand with red second hand. Please note that this clock does tick. Quartz movement, designed to count down the minutes between tides. Please note: Most tide clocks work by using a 12 hour 25 minute cycle. Generally in the UK & Ireland they vary in accuracy between plus or minus 30 minutes over a 30-day period. Therefore it is necessary to reset them using local tide tables every month or so. Off-shore sand bars, inlets, shallow waterways and/or other factors may cause further inaccuracies to online predicted tide times. Condition: New, unused (I do make these to order). The mechanism has been tested & is working at time of posting. A fun gift for any water sport enthusiast. Boating, wild swimming, sea swimming, surfing, paddle boarding, fishing etc. I WILL SHIP WORLD-WIDE Wonderful gifts for that special person for birthdays, anniversaries, Christmas or just for a thank you for being in your life. Buy for someone else or treat yourself. 20cm Printed Glass High & Low Tide Time Wall Clock Showing Hours To The Tides