For the insert items,there are clock,hygrometer,thermometer inserts for your choice,also there are many sizes and styles. Standard size:27mm,33mm,37mm,43mm,50mm,55mm,60mm,65mm ect.Clock number: Roman numerals or Arabic numeralsClock finishing:Gold,Chrome,Gun metal,Satin Gold,Satin Silver,Silver, quaint copper etc.Also we could produce the insert items as per your request,but please inform us the ...